Issue #1545540 by mkuhn: add alternate drush based suggestion for people who don't really need git_deploy.

Aidanlis notes in the issue that the "from" should be in the git-clone command.

Issue #1074350 by msonnabaum, halstead: Make sure our libraries module functions are available if possible.

#987882 by Freso | halstead | mikey_p: Fixed No way to determine time of commit if ref corresponds to dev release.

#1013602 by NightShade1632, halstead: Changed Replace basic functionality with Glip where possible. Back ported to 6.

#[1009182] by halstead, sdboyer: Add glip library for #[1007890] and future work. Back ported to Drupal 6.

#987880 by NightShade1632, halstead | mikey_p: Fixed Indicate results may not be accurate if tag and branch point to same commit. Back ported to Drupal 6