Adds -O1 to Matrix.cpp in iOS project file

This remedies crashes in iOS release builds that seem to be caused by optimisations.
Merge pull request #873 from WolfgangD/master

Adds -O1 to Matrix.cpp in iOS project file
Merge pull request #875 from dgough/next

Changed Scene::load() so it can load from ".gpb" files
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #876 from dgough/next

Updated the encoder CMakeLists for linux
Merge pull request #878 from blackberry/master

Merge master to next
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Updated the template project to use Scene::load instead of Bundle
Updated xcode to iOS 6.1
Merge pull request #881 from seanpaultaylor/next

Updated xcode to iOS 6.1
Fixed shader compile error in colored.vert when using point light
u_worldViewMatrix was not being declared when using colored.vert and POINT_LIGHT
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Added Game::getArguments().
It is now possible to get the command line arguments for all platforms except for Android. This can be updated later for Android is someone knows how to get the command line arguments.
Updated the samples to use getAspectRatio()
Updated the template project to use FBX instead of DAE