VFPU: Ensure that sin(4*x) returns 0.0 (and cos 1) for all x. Fixes #2921
Fix silly mistake in vfpu_sincos. Add unittest.
Merge pull request #6329 from hrydgard/vfpu-sincos

VFPU: Ensure that sin(4*x) returns 0.0 (and cos 1) for all x. Fixes #2921
Use sincosf where available (linux)
Have the Native* input functions return boolean to match new interface.

This is preparation for being able to tell the app that we handled the key or not.

This will make it possible to map android hardware keys like volume without them misbehaving.
Improve input event handling. Can now map volume keys on Android without issues.