Run updated copyright.pl on HEAD and 9.2 trees, updating the psql

\copyright output to 2012.

Backpatch to 9.2.

src/backend/catalog/genbki.pl

@@ -275,7 +275,7 @@ print SCHEMAPG <<EOM;
  * schemapg.h
  *    Schema_pg_xxx macros for use by relcache.c
  *
- * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * NOTES

src/backend/utils/Gen_fmgrtab.pl

@@ -101,7 +101,7 @@ qq|/*-------------------------------------------------------------------------
  * These macros can be used to avoid a catalog lookup when a specific
  * fmgr-callable function needs to be referenced.
  *
- * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * NOTES
@@ -136,7 +136,7 @@ qq|/*-------------------------------------------------------------------------
  * fmgrtab.c
  *    The function manager's table of internal functions.
  *
- * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * NOTES

src/bin/psql/help.c

@@ -435,7 +435,7 @@ print_copyright(void)
 	puts(
 		 "PostgreSQL Database Management System\n"
 		 "(formerly known as Postgres, then as Postgres95)\n\n"
-		 "Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group\n\n"
+		 "Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group\n\n"
 		 "Portions Copyright (c) 1994, The Regents of the University of California\n\n"
 	"Permission to use, copy, modify, and distribute this software and its\n"
 		 "documentation for any purpose, without fee, and without a written agreement\n"