attempting git checkout macosx from master build
adding env.global BRANCH to .travis.yml
more travis tweaking
autoconf tweaks, boost detection
get travis to install autoconf-archive
adding AC_LANG_PUSH to autoconf.ac
moving scripts around
fixing dirname flag
fixing do_or_die, ax_boost_base
still trying for boost detection, and autoconf-archive installation
yet another attempt at autoconf installation
fixing .travis/before_install.sh
trying git push from travis master
[skip ci] exit error if can't source _do_or_die
Merge branch 'master' into macosx