[Android] Fix a bunch of input bugs.
Looking at the old code for the ButtonManager was a brainfsck. This fixes a ton of bugs I kept uncovering as I was moving along.

Fixes the gamepad configuration file being incorrect.
No longer treats touchscreen in a special way. Ends up as a regular device with a "Touchscreen" device name.
Was incorrectly converting a index from integer to ButtonType. Wouldn't work due to the addition of some unused(in JNI) enumerators in ButtonType.
Fixes an issue where a map had a key as an axis which was causing its binding to be overwritten for every axis that was used twice (eg main stick left and right);
Fixes Triggers not working at all.
Fixes DPad not working at all.
Fixes C-Stick only half working.
Removes touch screen specific nativelibrary types onTouchAxisEvent and onTouchEvent.

Adds a configuration version configuration option. Allows easy configuration overwriting if the options need to be changed during updating.

Supersedes github PR #291.
Merge pull request #300 from Sonicadvance1/Fix-AndroidInput

[Android] Fixes a bunch of input bugs.
Android: add multitouch support
Merge pull request #412 from SeannyM/Android-Multitouch

Android: add multitouch support