Merge pull request #2478 from Memphiz/osxpackaging

[osx] - adapt osx packaging - make it similar to what we do on ios and a...
[osx/ios/atv2] - xcode: add XBMC_DEPENDS_ROOT and us it for constructing XBMC_DEPENDS - allows overwrite of XBMC_DEPENDS_ROOT when building with xcodebuild from commandline
[OSX] SSE4.1 is also not supported by some of old macbook, e.g. cpu T7200.
Merge pull request #2480 from ulion/ios_swipe_fix

[IOS] [Fix] Always send swipe events, left the receiver to handle it or not.
depends: fix libgcrypt for some android/linux toolchains
Fixed: CAddon::HasSettings() was broken after a call to CAddon::SaveSettings() on creation of user settings
Merge pull request #2498 from FernetMenta/audiocodec

dvdplayer: put line break into audio codec for consistency
[jenkins] - welcome jenkins support for osx/ios/atv2/android to mainline :o) - add buildsteps for usage with jenkins
Delete settings category if it already exists in CSettingsGroup::AddCategory()
Guard against failed memory allocation in CGUIDialogVideoBookmarks::AddBookmark()
[addons] add version check script that notifies user if there's a newer version released compared to what he is running