Improvements on device orientation computation

User plugin changes:

• Partially fix device orientation computation: highly improve camera stability and fix some inverted axis issues

Documentation changes:

• New limitation discovered: don't turn your controller upside down or the orientation computation will go wrong
• Explanation about some perceived inverted axis issues: please try to test the game behavior on a real PS Vita before reporting issues on this subject!

Vertical control issue fix

User plugin changes:

• Change cross product way for device quaternion to fix some vertical inversion
• Remove useless hook on "sceMotionGetBasicOrientation": this function always returns (0,1,0) even on PS Vita

Documentation changes:

• Compatibility list updated (special thanks to "stranno" who made a lot of tests!)
• Limitation on signed titles removed: after some tests on original titles, it works fine
• New limitation discovered: apparently, PS Vita can activate a magnometer which is used specially by games with horizontal conrol issues

DualShock 3 and 4 motion control support for PlayStation TV

A kernel and a user plugin are required, you must edit your ux0:tai/config.txt file to add them:

*KERNEL
ux0:tai/dsmotion.skprx

*TITLEID00
ux0:tai/dsmotion.suprx

Replace TITLEID00 by a title identifier which needs motion control or by ALL to affect all titles.

It only works for titles which have been dumped (by Vitamin or MaiDumpTools).
Please read carefully all limitations in "README.MD"!