quote_path: rename quote_path_relative() to quote_path()

There is no quote_path_absolute() or anything that causes confusion,
and one of the two large consumers already rename the long name
locally with a preprocessor macro.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

quote.c

@@ -352,8 +352,7 @@ void write_name_quoted_relative(const char *name, const char *prefix,
 }
 
 /* quote path as relative to the given prefix */
-char *quote_path_relative(const char *in, const char *prefix,
-			  struct strbuf *out)
+char *quote_path(const char *in, const char *prefix, struct strbuf *out)
 {
 	struct strbuf sb = STRBUF_INIT;
 	const char *rel = relative_path(in, prefix, &sb);