add some things to .gitignore for xcode projects
Merge pull request #156 from maddox/xcode-ignores

Add items to .gitignore for Xcode projects
(iOS) Compile in sinc resampler and set to SINC_LOWEST_QUALITY
use the app level documents directory instead of /var/mobile

This is a big change in that it changes the RetroArch system path where
it saves settings, game saves, etc. Using /var/mobile meant that
RetroArch only ran on jailbroken devices. This was the only thing
requiring a jailbreak.

Now not only will it work on vanilla devices, but all settings etc are
neating found in the app's documents directory.
enable iTunes File Sharing

Turning on iTunes File Sharing means being able to easily drop roms
into the app by dragging them in via iTunes.
(iOS, ObjC removal) Remove the RAInputResponder class, sendEvent in main.m now maintains and exports arrays of pressed keys and touches.
(iOS) Clean up BTstack dynamic loading. Rename ios_joypad.m to ios_joypad.c, there wans't any objective c code there to begin with.
Add input driver for QNX. Copy null driver for now.

Conflicts:
	griffin/griffin.c
Add proper input handling for PlayBook/BB10
Merge pull request #158 from CatalystG/qnx_input

PlayBook/BB10 Input Handling
Add CatalystG to AUTHORS
(Blackberry) Build fix
(Blackberry) Style/indent nits in qnx_input.c - two spaces -
placement of brackets - etc
(AUTHORS) Add catalystgdev@gmail.com to AUTHORS
(Blackberry) Get rid of bbutil - we don't need it
(iOS, ObjC removal) Convert RAConfig class into set of c helper functions.
(iOS/Griffin) Move ios_input.c and ios_joypad.c compilation to Griffin
(iOS) Remove some trivial wrapper functions around config_file.c
(iOS) Remove config file wrapper all together.
(iOS) Add fb_alpha_libretro.info