Honor "tagopt = --tags" configuration option

If the "tagopt = --tags" option of a remote is set, all tags
will be fetched as in "git fetch --tags".

Signed-off-by: Samuel Tardieu <sam@rfc1149.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/examples/git-fetch.sh

@@ -127,10 +127,12 @@ then
 	orig_head=$(git rev-parse --verify HEAD 2>/dev/null)
 fi
 
-# Allow --notags from remote.$1.tagopt
+# Allow --tags/--notags from remote.$1.tagopt
 case "$tags$no_tags" in
 '')
 	case "$(git config --get "remote.$1.tagopt")" in
+	--tags)
+		tags=t ;;
 	--no-tags)
 		no_tags=t ;;
 	esac