[beast] PO: fix CLEANFILES for distcleancheck

[Tim Janik <timj src gnome org>]

commit e820a572c8eed806aee84afc9fcce0d719575d34
Author: Tim Janik <timj gtk org>
Date:   Tue Sep 7 03:46:13 2010 +0200

    PO: fix CLEANFILES for distcleancheck

 po/Makefile.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/po/Makefile.am b/po/Makefile.am
index 7e59441..aeb715d 100644
--- a/po/Makefile.am
+++ b/po/Makefile.am
@@ -198,3 +198,6 @@ define test_unlisted
 endef # GNU Make needs an explicit last newline
 .PHONY: unlisted
 CLEANFILES += unlisted
+
+# clean INTLMERGE leftovers
+CLEANFILES += intlmerge.tmpcache