Add myself to AUTHORS
Support rotozoomSurface
Restore old zoomSurface test, add new tests for rotozoomSurface
Merge pull request #1015 from fhd/incoming

Support rotozoomSurface
* Added glfw headers and testcases.
* Edited tests so they use emscripten_main_loop.
* Got triangle test about to work.
* Implemented misc functions.
* Misc functions.
* Added a test.
* Mouse events are ok.
* Keyboard events work partially.
* Minor fix.
* OpenGL extensions.
* Disabled setMousePos in library_glfw.
* Fixed mouse position.
* Header.
* Fixed glfw test.
* Added glfw headers and testcases.
* Edited tests so they use emscripten_main_loop.
* Got triangle test about to work.
* Implemented misc functions.
* Added a test.
* Mouse events are ok.
* Keyboard events work partially.
* Minor fix.
* OpenGL extensions.
* Fixed mouse position.