Add --relative-date option to the revision interface

Exposes the infrastructure from 9a8e35e987.

Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>

revision.c

@@ -816,6 +816,10 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
 				revs->simplify_history = 0;
 				continue;
 			}
+			if (!strcmp(arg, "--relative-date")) {
+				revs->relative_date = 1;
+				continue;
+			}
 			opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i);
 			if (opts > 0) {
 				revs->diff = 1;