bowtie: update to version 0.12.9 (#37335; maintainer timeout)


git-svn-id: http://svn.macports.org/repository/macports/trunk/dports@101239 d073be05-634f-4543-b044-5fe20cf6d1d6
clang-2.9: Fix a possible build failure


git-svn-id: http://svn.macports.org/repository/macports/trunk/dports@101240 d073be05-634f-4543-b044-5fe20cf6d1d6