Merge duplicate upper/lower/initcap() routines in oracle_compat.c and

formatting.c to use common code;  remove duplicate functions and support
routines that are no longer needed.

src/include/utils/formatting.h

@@ -2,7 +2,7 @@
 /* -----------------------------------------------------------------------
  * formatting.h
  *
- * $PostgreSQL: pgsql/src/include/utils/formatting.h,v 1.18 2008/01/01 19:45:59 momjian Exp $
+ * $PostgreSQL: pgsql/src/include/utils/formatting.h,v 1.19 2008/06/23 19:27:19 momjian Exp $
  *
  *
  *	 Portions Copyright (c) 1999-2008, PostgreSQL Global Development Group
@@ -21,6 +21,10 @@
 #include "fmgr.h"
 
 
+extern char *str_tolower(char *buff, size_t nbytes);
+extern char *str_toupper(char *buff, size_t nbytes);
+extern char *str_initcap(char *buff, size_t nbytes);
+
 extern Datum timestamp_to_char(PG_FUNCTION_ARGS);
 extern Datum timestamptz_to_char(PG_FUNCTION_ARGS);
 extern Datum interval_to_char(PG_FUNCTION_ARGS);