Add more ALTER <object> .. SET SCHEMA commands.

This adds support for changing the schema of a conversion, operator,
operator class, operator family, text search configuration, text search
dictionary, text search parser, or text search template.

Dimitri Fontaine, with assorted corrections and other kibitzing.

src/include/commands/alter.h

@@ -15,9 +15,16 @@
 #define ALTER_H
 
 #include "nodes/parsenodes.h"
+#include "utils/acl.h"
+#include "utils/relcache.h"
 
 extern void ExecRenameStmt(RenameStmt *stmt);
 extern void ExecAlterObjectSchemaStmt(AlterObjectSchemaStmt *stmt);
+extern void AlterObjectNamespace(Relation rel, int cacheId,
+								 Oid classId, Oid objid, Oid nspId,
+								 int Anum_name, int Anum_namespace, int Anum_owner,
+								 AclObjectKind acl_kind,
+								 bool superuser_only);
 extern void ExecAlterOwnerStmt(AlterOwnerStmt *stmt);
 
 #endif   /* ALTER_H */