mksourcepkg is not getting the tag right by itself, so recording it in the
Makefile explicitly for now
diff --git a/.hgtags b/.hgtags
index 1483fae..699bcb6 100644
--- a/.hgtags
+++ b/.hgtags
@@ -72,3 +72,4 @@
 4777c4007b5b194423953d41b1e5e6adaaba6c5d v2.5.1c1
 490d8c09abcb814950be7bb7a25c3ff2047c7eb5 v2.5.1
 0a8aae575cdddbf3d133fcb4eed91080e3fe41f3 v2.5.2c1
+7f7add8a072272b7204ff464b04a3a6f3ab77dea v2.5.1c1