Sync to ASF 1.3.x branch
Run: git submodule add git://git.sv.gnu.org/autoconf-archive.git dependencies/autoconf-archive
Sync autoconf-archive to tag v2011.09.17
Run: git submodule add git://git.savannah.gnu.org/gnulib.git dependencies/gnulib
Import pristine autoconf-2.69 from http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
A helper to run one Ruby block with an extra directory in the PATH
Support building Autoconf 2.69
Adhere to my 134-column rule
Successfully ./bootstrap.sh autoconf-archive
A helper to clean up Git after working in the checkout
Support installing autoconf-archive