Log Message:
Update to patch 75.

Changes for version 75

* Fixed screensaver disable option so it doesn't send a fake keypress
when Snes9x isn't focused.
* Changed resolution setting to store width and height instead of
a screen's mode index.
* Fixed a bug where the PortAudio driver wouldn't output sound at
44100hz.
* Allowed changing the behavior of the ESC key so it exits Snes9x.

Changes for version 74

* Fixed a couple thread deadlocking problems in the audio mixer
that could result in no sound.
* Removed the powerof2 function to fix compile problems on OpenBSD.
* Changed fullscreen mode to issue a raise signal to the window
manager after remapping.

Changes for version 73

* Fixed a compile error when XRandR support isn't being built.
* Included Tukuyomi's updated French localization.

Changes for version 72

* Added a new regular-interval audio mixer to significantly improve
sound quality.
* Added a new SDL audio output driver.

Changes for version 71

* Refactored video driver initialization code.
* Removed dependency on gtkglext for OpenGL output.
* Allowed theme icon to be used for window mini-icon.