.osx: Add Yosemite’s search results for Spotlight

Yosemite introduces new Spotlight search results, and if you don’t add it to `defaults write com.apple.spotlight orderedItems` it will be removed from the System Preferences → Spotlight → Search Results` list with no way to re-enable them through the System Preferences panel.

Closes #456.
Add .gdbinit
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Add .gdbinit
  .osx: Add Yosemite’s search results for Spotlight
Added sublime packages list