(iOS) Make cocoa menu button image show up more constantly.
Add support for mapping keyboard keys to input overlays.
(Overlay Keyboard) Use 1 bit per key to store state.
(Overlay Keyboard) Handle key events (no character data yet)
Use C linkage in frontend.h and input_common.h
Merge pull request #475 from clienthax/master

Add support for Cobra ODE
Merge pull request #474 from heuripedes/extern-c

Use C linkage in frontend.h and input_common.h
Merge pull request #461 from libretro/kb_overlay

Support for keyboard keys on overlays.
(OSX) Get rid of unused variable warning/variable is used before it's initialized
(Apple) Ifdef code with HAVE_LOCATION and HAVE_CAMERA
Build fix for overlay.

Compute keyboard mod state once.
Fix C++ 'new' usage.
(GX) Jacobeian changes
(Android) Build fix
Better MUCH iReadGo i5 key mappings.
Fixed zipFile resource leaking.
Merge pull request #477 from iAmGhost/fix_android_resource_leak

Fixed zipFile resource leaking.
Reuse bind maps in input_common for overlay.
Allows buttons with l_x_plus, etc, to act as analogs.

Matches up with regular input drivers which can map buttons to analogs
as well if the analogs are not used.
Avoid potential overflows with overlay analogs.
(Apple) Add analog stick support for classic controller. You need to rotate the stick 360 degrees to calibrate it. (Todo: Document this somewhere!)