Line width and point size deprecation.
These are legacy functions deprecated since OpenGL 1, there is no DX
equivelant, and they are beyond the scope of a cross platform game engine.
Removed joystick outline from XInput it is going to be in Windows by
default, only gamepads will be extensions.
Outlined DirectInput extension for Windows joysticks.
Added main joystick functions to DirectInput extension.
Added the rest of the joystick functions for the name and number of axes
querying.
Updating ini extension, its only applicable to operating systems other
than Windows.
Readded deprecated OpenGL functions. Direct3D 9 will need a shader.
Merge pull request #303 from RobertBColton/master

Windows Joysticks *Merge*