tag: grok "--with" as synonym to "--contains"

Just like "git branch" can be told to list the branches that has the
named commit by "git branch --with <commit>", teach the same
short-hand to "git tag", so that "git tag --with <commit>" shows the
releases with the named commit.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/tag.c b/builtin/tag.c
index 74d3780..74d599c 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -471,6 +471,12 @@
 			parse_opt_with_commit, (intptr_t)"HEAD",
 		},
 		{
+			OPTION_CALLBACK, 0, "with", &with_commit, N_("commit"),
+			N_("print only tags that contain the commit"),
+			PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
+			parse_opt_with_commit, (intptr_t)"HEAD",
+		},
+		{
 			OPTION_CALLBACK, 0, "points-at", NULL, N_("object"),
 			N_("print only tags of the object"), 0, parse_opt_points_at
 		},