ndb - fix for BUG#23137, ha_ndbcluster.m4 bug.

Because NDB_CXXFLAGS is just used in ndb engine, moved NDB_CXXFLAGS from ha_ndbcluster.m4 to ndb/config/common.mk.am.

config/ac-macros/ha_ndbcluster.m4

@@ -197,7 +197,6 @@ AC_DEFUN([MYSQL_SETUP_NDBCLUSTER], [
 
   MAKE_BINARY_DISTRIBUTION_OPTIONS="$MAKE_BINARY_DISTRIBUTION_OPTIONS --with-ndbcluster"
 
-  CXXFLAGS="$CXXFLAGS \$(NDB_CXXFLAGS)"
   if test "$have_ndb_debug" = "default"
   then
     have_ndb_debug=$with_debug

storage/ndb/config/common.mk.am

@@ -10,3 +10,5 @@ INCLUDES = $(INCLUDES_LOC)
 LDADD = $(LDADD_LOC)
 DEFS = @DEFS@ @NDB_DEFS@ $(DEFS_LOC) $(NDB_EXTRA_FLAGS)
 NDB_CXXFLAGS=@ndb_cxxflags_fix@ $(NDB_CXXFLAGS_LOC) 
+NDB_AM_CXXFLAGS:= $(AM_CXXFLAGS)
+AM_CXXFLAGS=$(NDB_AM_CXXFLAGS) $(NDB_CXXFLAGS)