Remove common.c, removed in Karal's patch.

src/backend/utils/mb/common.c

-/*
- * This file contains some public functions
- * usable for both the backend and the frontend.
- * Tatsuo Ishii
- * $Id: common.c,v 1.13 2001/04/16 02:42:01 tgl Exp $
- */
-#include "postgres.h"
-
-#ifdef WIN32
-#include "win32.h"
-#else
-#include <unistd.h>
-#endif
-
-#include "miscadmin.h"
-#include "mb/pg_wchar.h"
-#include "utils/builtins.h"
-
-#ifndef FRONTEND
-/*
- * convert encoding char to encoding symbol value.
- * case is ignored.
- * if there's no valid encoding, returns -1
- */
-int
-pg_char_to_encoding(const char *s)
-{
-	pg_encoding_conv_tbl *p = pg_conv_tbl;
-
-	if (!s)
-		return (-1);
-
-	for (; p->encoding >= 0; p++)
-	{
-		if (!strcasecmp(s, p->name))
-			break;
-	}
-	return (p->encoding);
-}
-
-/* Same, as an fmgr-callable function */
-Datum
-PG_char_to_encoding(PG_FUNCTION_ARGS)
-{
-	Name		s = PG_GETARG_NAME(0);
-
-	PG_RETURN_INT32(pg_char_to_encoding(NameStr(*s)));
-}
-
-/*
- * check to see if encoding name is valid
- */
-int
-pg_valid_client_encoding(const char *name)
-{
-	return (pg_char_to_encoding(name));
-}
-
-/*
- * find encoding table entry by encoding
- */
-pg_encoding_conv_tbl *
-pg_get_encent_by_encoding(int encoding)
-{
-	pg_encoding_conv_tbl *p = pg_conv_tbl;
-
-	for (; p->encoding >= 0; p++)
-	{
-		if (p->encoding == encoding)
-			return (p);
-	}
-	return (0);
-}
-
-/*
- * convert encoding symbol to encoding char.
- * if there's no valid encoding symbol, returns ""
- */
-const char *
-pg_encoding_to_char(int encoding)
-{
-	pg_encoding_conv_tbl *p = pg_get_encent_by_encoding(encoding);
-
-	if (!p)
-		return ("");
-	return (p->name);
-}
-
-/* Same, as an fmgr-callable function */
-Datum
-PG_encoding_to_char(PG_FUNCTION_ARGS)
-{
-	int32		encoding = PG_GETARG_INT32(0);
-	const char *encoding_name = pg_encoding_to_char(encoding);
-
-	return DirectFunctionCall1(namein, CStringGetDatum(encoding_name));
-}
-
-#endif