Revert a premature version upgrade - this is 5.0.51 still.

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, 5.0.53)
+AM_INIT_AUTOMAKE(mysql, 5.0.51)
 AM_CONFIG_HEADER([include/config.h:config.h.in])
 
 PROTOCOL_VERSION=10
@@ -23,7 +23,7 @@ NDB_SHARED_LIB_VERSION=$NDB_SHARED_LIB_MAJOR_VERSION:0:0
 # ndb version
 NDB_VERSION_MAJOR=5
 NDB_VERSION_MINOR=0
-NDB_VERSION_BUILD=53
+NDB_VERSION_BUILD=51
 NDB_VERSION_STATUS=""
 
 # Set all version vars based on $VERSION. How do we do this more elegant ?