* tools/dev/unix-build/Makefile.svn: In my custom build script, which is also
   used by the bb-openbsd buildbot, fix the JavaHL build by passing the proper
   CXXFLAGS to the configure script.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1597772 13f79535-47bb-0310-9956-ffa450edef68