Merge branch 'ma/parse-maybe-bool'

Code clean-up.

* ma/parse-maybe-bool:
  parse_decoration_style: drop unused argument `var`
  treewide: deprecate git_config_maybe_bool, use git_parse_maybe_bool
  config: make git_{config,parse}_maybe_bool equivalent
  config: introduce git_parse_maybe_bool_text
  t5334: document that git push --signed=1 does not work
  Doc/git-{push,send-pack}: correct --sign= to --signed=

builtin/send-pack.c

@@ -105,7 +105,7 @@ static int send_pack_config(const char *k, const char *v, void *cb)
 	if (!strcmp(k, "push.gpgsign")) {
 		const char *value;
 		if (!git_config_get_value("push.gpgsign", &value)) {
-			switch (git_config_maybe_bool("push.gpgsign", value)) {
+			switch (git_parse_maybe_bool(value)) {
 			case 0:
 				args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
 				break;