hub moved
brace expansion isn't available to all POSIX shells
add activescaffold
add rails
add pace-graph
add flot
add org2blog
add rpm-spec-mode
add Garmin-Forerunner-610-Extractor
rename MR_GIT_REMOTE(_BRANCH)? -> MR_GIT_CLONE_REMOTE$1
add set_git_clone_remote{,_branch}
allow MR_GIT_CLONE_REMOTE_BRANCH to take effect
rename set_github_name to more generic set_git_clone_name

This allows us to indicate the difference between a locally cloned
repo's name and the one it was cloned from, even when github isn't
involved.  This will help unify code handling other hosting services.
refactor calculation of name of repo to clone
explain clone / origin name terminology
rename github_url() to github_clone_url()
simplify _github_clone
move set_git_clone_name and git_clone_name to my-git-clone
rename set_github_origin to set_github_origin_user

and similarly for set_github_rw_origin
add comments explaining when github_*_url are used