Added Git packages for OS X 10.6–10.9


Former-commit-id: 04aefe3d368a653fd925056e7810185dbf0a8705
Moved Git binaries to a separate repo


Former-commit-id: 32ec354a46cb6bdcd37810be7e5862d04b711a42
Install will now download and install Git on Macs


Former-commit-id: 11739a52fca1cb817486d066ca6d93cd4e4d3539
Install recognizes Mavericks' "fake" /usr/bin/git


Former-commit-id: de686d1446a27b1eee897ea5a8431c5132b3903b
Don't be quite so quiet when installing.


Former-commit-id: 7488b06f997a98927850dccbad5ebc81c5365e53
Same git-recognition logic as install's


Former-commit-id: 5110eeb30f9d696a036b30c24d742c53a9692c4b
Install script unlinks its temp files.


Former-commit-id: a1d54a8e994b194d657f1db2c2d39deac1ce3aed
Changed unlink() to rmdir() because I'm stupid


Former-commit-id: ed728acdfb6cd9be06e8ba3e963fe946355d6d8f