Added debugdir macro for iOS and osx targets.
Removed outdated mixbuffer in DirectSound audio backend.
Updated clear function in Graphics.
Added Texture locking.
Reworked file interface.
Started implementing error handling.
Updated WindowsRT backend.
Updated Android backend.
Updated Linux backend.
Fixed iOS audio on actual devices.
iOS timing fix.
Updated Linux and HTML5 backends.
Updated Windows, WindowsRT and Android backends.