Fixed segmentation fult created by quick fix

#764 - Quick fix that clears alot of memory.

Fix audio pitch

Fixed height bug in DrawTextRecEx()

It was not working on Windows 10

Remove compiled libraylib.a

Added some comments to loader function...

Fix config.h flags

raudio AudioBuffer internal struct collides on macOS with CoreAudio same name struct. In this case struct has been renamed because is internal to raudio... but probably all system should be redesigned.

LoadBMFont filepath fix

Custom implementation that returns -1 if it fails (no negative values supported)

...while using a RenderTexture combined with 3d mode

REDESIGNED: rlLoadRenderTexture()
ADDED: rlRenderTextureAttach()
ADDED: rlRenderTextureComplete()

Probably uncomplete, not tested yet...

Added DrawTextRecEx()