+2011-03-05 Yao Qi <yao@codesourcery.com>
+
+ * Makefile.in (CLEANDIRS, REQUIRED_SUBDIRS): New variable.
+ (subdir_do): New make target. Copied from gdb/Makefile.
+ (maintainer-clean, realclean, distclean, clean): Call corresponding
+ make targets in common/Makefile.
+
2011-03-04 Yao Qi <yao@codesourcery.com>
* Makefile.in: Remove GNU make feature --directory.