configure.in (in the new clone):

    This is a re-clone after tagging, so the version must be set back to 5.1.7-beta.

configure.in

@@ -7,7 +7,7 @@ AC_INIT(sql/mysqld.cc)
 AC_CANONICAL_SYSTEM
 # The Docs Makefile.am parses this line!
 # remember to also change ndb version below and update version.c in ndb
-AM_INIT_AUTOMAKE(mysql, 5.1.8-beta)
+AM_INIT_AUTOMAKE(mysql, 5.1.7-beta)
 AM_CONFIG_HEADER(config.h)
 
 PROTOCOL_VERSION=10