Add install_git and refactor to support it. Pass package name, git url, git ref, and build commands.
Autocompletion
Merge remote-tracking branch 'jeremy/install-git'
pushd and popd are noisy
make_package should not print the "Installed" message
Pass $CONFIGURE_OPTS to ./configure
Add definition for rbx-2.0.0-dev
Merge remote-tracking branch 'guilleiguaran/rbx-2.0.0-dev'
rbx-2.0.0-dev gets rubygems-1.8.10
ruby-build 20110914
use gcc on lion for 1.9.2
Include --with-gcc config flag for gcc-4.2 on Lion, per https://github.com/ruby/ruby/commit/9151ed22b360ba3d2bde3b51969a682f9a4a3096
Merge pull request #40 from jeremy/with-gcc-flag

set --with-gcc=gcc-4.2 on lion + xcode 4.1
Support REE 1.8.7-2010.02
Add definition for Ruby 1.8.7-p334.
move build_package_ree_installer function to ruby-build script
Merge pull request #45 from cgunther/ree-1.8.7-2010.02

Support REE 1.8.7-2010.02
Support REE 1.8.6 20090610
Use common build_package_ree_installer
Merge pull request #48 from paulrosania/ree-1.8.6

Support REE 1.8.6