fix problem with make dist and decimal.h

include/Makefile.am:
  fix the problem with make dist - decimal.h needs to be in the
  source distribution

include/Makefile.am

@@ -30,7 +30,7 @@ noinst_HEADERS =	config-win.h config-os2.h config-netware.h \
 			my_nosys.h my_alarm.h queues.h rijndael.h sha1.h \
 			my_aes.h my_tree.h hash.h thr_alarm.h \
 			thr_lock.h t_ctype.h violite.h md5.h \
-			mysql_version.h.in my_handler.h my_time.h
+			mysql_version.h.in my_handler.h my_time.h decimal.h
 
 # mysql_version.h are generated
 SUPERCLEANFILES =	mysql_version.h my_config.h