TT#49106 Clean up generated man pages

Change-Id: I5fc089dff955a37403d170c81ba5d0d42eeb8415
Fixes: commit 1f10dc30d5

lib/common.Makefile

@@ -12,7 +12,7 @@ debug:
 dep:		.depend
 
 clean:
-	rm -f $(OBJS) $(TARGET) $(LIBSRCS) $(DAEMONSRCS) $(ADD_CLEAN) .depend core core.*
+	rm -f $(OBJS) $(TARGET) $(LIBSRCS) $(DAEMONSRCS) $(MANS) $(ADD_CLEAN) .depend core core.*
 	rm -f fix_frame_channel_layout.h fix_frame_channel_layout-test.[co] *.strhash.c $(HASHSRCS)
 
 .depend:	$(SRCS) $(LIBSRCS) $(DAEMONSRCS) Makefile