Sync pg_bsd_indent's copyright notices with Postgres practice.

To avoid confusion, make the copyright notices in these files
match the 3-clause form of the BSD license, per the blanket
policy update that UC Berkeley issued years ago.

Discussion: https://postgr.es/m/3935719.1675967430@sss.pgh.pa.us
Discussion: https://postgr.es/m/20230123011002.fzcaa3krql3mqsfn@awork3.anarazel.de

src/tools/pg_bsd_indent/README

@@ -1,3 +1,40 @@
+The FreeBSD originals of the files in this directory bear the
+"4-clause" version of the BSD license.  We have removed the
+"advertising" clauses, as per UC Berkeley's directive here:
+ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
+which reads:
+
+July 22, 1999
+
+To All Licensees, Distributors of Any Version of BSD:
+
+As you know, certain of the Berkeley Software Distribution ("BSD") source
+code files require that further distributions of products containing all or
+portions of the software, acknowledge within their advertising materials
+that such products contain software developed by UC Berkeley and its
+contributors.
+
+Specifically, the provision reads:
+
+"     * 3. All advertising materials mentioning features or use of this software
+      *    must display the following acknowledgement:
+      *    This product includes software developed by the University of
+      *    California, Berkeley and its contributors."
+
+Effective immediately, licensees and distributors are no longer required to
+include the acknowledgement within advertising materials.  Accordingly, the
+foregoing paragraph of those BSD Unix files containing it is hereby deleted
+in its entirety.
+
+William Hoskins
+Director, Office of Technology Licensing
+University of California, Berkeley
+
+----------
+
+What follows is the README file as maintained by FreeBSD indent.
+
+----------
 
   $FreeBSD: head/usr.bin/indent/README 105244 2002-10-16 13:58:39Z charnier $
 

src/tools/pg_bsd_indent/args.c

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *

src/tools/pg_bsd_indent/indent.c

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *

src/tools/pg_bsd_indent/indent_codes.h

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *

src/tools/pg_bsd_indent/indent_globs.h

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *

src/tools/pg_bsd_indent/io.c

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *

src/tools/pg_bsd_indent/lexi.c

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *

src/tools/pg_bsd_indent/parse.c

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *

src/tools/pg_bsd_indent/pr_comment.c

@@ -12,11 +12,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *