! Don't show IE6/IE7 deprecation warnings to known bots. They might actually cache them... (Load.php)
+ Updated Bad Behavior filters to version 2.2.15. It's just an extra test. Also updated credit URLs to remove the www subdomain. (Security.php, Security.english.php)

! Went through all existing filters and compared them to the latest Bad Behavior, which was painful because they weren't in the same order. As a result:
  - Fixed 'PMAfind' into 'PMAFind', which is what BB uses. (Pete bug.)
  - Added a mention about an entry that was removed by BB without warning, but seems harmful enough to keep.
  - Removed 'Mozilla ', which according to BB is used by the Google AdSense bot, which we don't want to cross...

+ Added back some entries that Pete decided not to import from BB 2.2.8 (see August 20, 2012 commit):
  - Restored 'Mozilla/0', probably an oversight.
  - Ensured that '<sc' is tested against everywhere in the string, not just at the start. If BB does it that way, it probably has a reason to. Opening space, maybe..?
  - Windows 3.x, 9x, ME, as well as IE 1.0 and Mozilla Firebird (pre-Firefox) have no reason to be used by anyone in 2014, so they should be banned because they're probably bots (I can concur.)

@ If needed, you can re-allow old OSes and old browsers via a new hidden setting. Just set $settings['allow_jurassic_crap'] to 1. Yeah, I make up funny variable names.

@ Note: this commit is mostly about me taking ownership of one of Pete's old jobs.. But I don't know if the job was about implementing BB, or saying one knows better than BB. Because I really can't say that.