Rename ax_thrift_gen.m4, which now contains two macros.


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@666533 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/aclocal/ax_thrift_gen.m4 b/aclocal/ax_thrift_internal.m4
similarity index 100%
rename from aclocal/ax_thrift_gen.m4
rename to aclocal/ax_thrift_internal.m4