Ability to blacklist keywords; they will be replaced by valid alternatives.
off-by-one error in joysticks.
Merge pull request #843 from sorlok/keyword_blacklist

Ability to blacklist keywords; they will be replaced by valid alternatives.
Implements directory_delete
Tested on XLIB and Win32
Merge pull request #855 from RobertBColton/master

Implements directory_delete
Merge pull request #847 from sorlok/joystick_fix

off-by-one error in joysticks.