Fix mess created by wrpAntiAliasing patch

The support patch for AntiAliasing by Mickey Lyle <willrandship@gmail.com>
should have been rejected in the first place because it was unfinished. Instead
this trivial 14 lines patch is now spread over 4 commits:

 * 977de262d28a5b2c5fdaea8c885a5c2dd3d3144b ("Added a new option "wrpAntiAliasing #" that enables antialiasing for Glide64mk2.")
 * dbeaf9e922f7c6bfc0f1db917aacfec61f890bb6 ("Fixed a few spots in the code, mostly about whitespace and comments.")
 * add config parameter descriptions ("add config parameter descriptions")
 * this commit to cleanup the remaining mess