apply: make some parsing functions static again

Some parsing functions that were used in both "apply.c" and
"builtin/apply.c" are now only used in the former, so they
can be made static to "apply.c".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/apply.c b/apply.c
index 5e3780d..98c7f6e 100644
--- a/apply.c
+++ b/apply.c
@@ -27,7 +27,7 @@ static void git_apply_config(void)
 	git_config(git_default_config, NULL);
 }
 
-int parse_whitespace_option(struct apply_state *state, const char *option)
+static int parse_whitespace_option(struct apply_state *state, const char *option)
 {
 	if (!option) {
 		state->ws_error_action = warn_on_ws_error;
@@ -57,8 +57,8 @@ int parse_whitespace_option(struct apply_state *state, const char *option)
 	return error(_("unrecognized whitespace option '%s'"), option);
 }
 
-int parse_ignorewhitespace_option(struct apply_state *state,
-				  const char *option)
+static int parse_ignorewhitespace_option(struct apply_state *state,
+						 const char *option)
 {
 	if (!option || !strcmp(option, "no") ||
 	    !strcmp(option, "false") || !strcmp(option, "never") ||