added autotools support for GnuTLS
added autotools support for GnuTLS

doctaweeks/umurmur,troxor/umurmur,fmorgner/umurmur,doctaweeks/umurmur,fmorgner/umurmur,snowblind/umurmur,snowblind/umurmur,troxor/umurmur,doctaweeks/umurmur