Accept multiple -I, -P, -T and -n options in pg_restore.

We already did this for -t (--table) in 9.3, but missed the other similar
options. For consistency, allow all of them to be specified multiple times.

Unfortunately it's too late to sneak this into 9.3, so commit to master
only.

doc/src/sgml/ref/pg_restore.sgml

@@ -230,7 +230,8 @@
       <term><option>--index=<replaceable class="parameter">index</replaceable></option></term>
       <listitem>
        <para>
-        Restore definition of named index only.
+        Restore definition of named index only.  Multiple indexes
+        may be specified with multiple <option>-I</> switches.
        </para>
       </listitem>
      </varlistentry>
@@ -314,7 +315,8 @@
       <term><option>--schema=<replaceable class="parameter">schema</replaceable></option></term>
       <listitem>
        <para>
-        Restore only objects that are in the named schema.  This can be
+        Restore only objects that are in the named schema.  Multiple schemas
+        may be specified with multiple <option>-n</> switches.  This can be
         combined with the <option>-t</option> option to restore just a
         specific table.
        </para>
@@ -348,7 +350,8 @@
        <para>
         Restore the named function only.  Be careful to spell the function
         name and arguments exactly as they appear in the dump file's table
-        of contents.
+        of contents.  Multiple functions may be specified with multiple
+        <option>-P</> switches.
        </para>
       </listitem>
      </varlistentry>
@@ -413,7 +416,8 @@
       <term><option>--trigger=<replaceable class="parameter">trigger</replaceable></option></term>
       <listitem>
        <para>
-        Restore named trigger only.
+        Restore named trigger only.  Multiple triggers may be specified with
+        multiple <option>-T</> switches.
        </para>
       </listitem>
      </varlistentry>

src/bin/pg_dump/pg_backup.h

@@ -129,10 +129,10 @@ typedef struct _restoreOptions
 	int			selFunction;
 	int			selTrigger;
 	int			selTable;
-	char	   *indexNames;
-	char	   *functionNames;
-	char	   *schemaNames;
-	char	   *triggerNames;
+	SimpleStringList indexNames;
+	SimpleStringList functionNames;
+	SimpleStringList schemaNames;
+	SimpleStringList triggerNames;
 	SimpleStringList tableNames;
 
 	int			useDB;

src/bin/pg_dump/pg_backup_archiver.c

@@ -2456,12 +2456,12 @@ _tocEntryRequired(TocEntry *te, teSection curSection, RestoreOptions *ropt)
 	}
 
 	/* Check options for selective dump/restore */
-	if (ropt->schemaNames)
+	if (ropt->schemaNames.head != NULL)
 	{
 		/* If no namespace is specified, it means all. */
 		if (!te->namespace)
 			return 0;
-		if (strcmp(ropt->schemaNames, te->namespace) != 0)
+		if (!(simple_string_list_member(&ropt->schemaNames, te->namespace)))
 			return 0;
 	}
 
@@ -2479,21 +2479,21 @@ _tocEntryRequired(TocEntry *te, teSection curSection, RestoreOptions *ropt)
 		{
 			if (!ropt->selIndex)
 				return 0;
-			if (ropt->indexNames && strcmp(ropt->indexNames, te->tag) != 0)
+			if (ropt->indexNames.head != NULL && (!(simple_string_list_member(&ropt->indexNames, te->tag))))
 				return 0;
 		}
 		else if (strcmp(te->desc, "FUNCTION") == 0)
 		{
 			if (!ropt->selFunction)
 				return 0;
-			if (ropt->functionNames && strcmp(ropt->functionNames, te->tag) != 0)
+			if (ropt->functionNames.head != NULL && (!(simple_string_list_member(&ropt->functionNames, te->tag))))
 				return 0;
 		}
 		else if (strcmp(te->desc, "TRIGGER") == 0)
 		{
 			if (!ropt->selTrigger)
 				return 0;
-			if (ropt->triggerNames && strcmp(ropt->triggerNames, te->tag) != 0)
+			if (ropt->triggerNames.head != NULL && (!(simple_string_list_member(&ropt->triggerNames, te->tag))))
 				return 0;
 		}
 		else

src/bin/pg_dump/pg_restore.c

@@ -196,7 +196,7 @@ main(int argc, char **argv)
 				break;
 
 			case 'n':			/* Dump data for this schema only */
-				opts->schemaNames = pg_strdup(optarg);
+				simple_string_list_append(&opts->schemaNames, optarg);
 				break;
 
 			case 'O':
@@ -213,17 +213,17 @@ main(int argc, char **argv)
 			case 'P':			/* Function */
 				opts->selTypes = 1;
 				opts->selFunction = 1;
-				opts->functionNames = pg_strdup(optarg);
+				simple_string_list_append(&opts->functionNames, optarg);
 				break;
 			case 'I':			/* Index */
 				opts->selTypes = 1;
 				opts->selIndex = 1;
-				opts->indexNames = pg_strdup(optarg);
+				simple_string_list_append(&opts->indexNames, optarg);
 				break;
 			case 'T':			/* Trigger */
 				opts->selTypes = 1;
 				opts->selTrigger = 1;
-				opts->triggerNames = pg_strdup(optarg);
+				simple_string_list_append(&opts->triggerNames, optarg);
 				break;
 			case 's':			/* dump schema only */
 				opts->schemaOnly = 1;