Faster Firefox

A couple of performance related links for Firefox users. Here is a page with optimized builds of 1.5.0.7 and 2.0RC1, ie. with various additional compiler options turned on (over the standard build). I've been using a 1.5.0.7 SSE2 build all day and it seems stable. In addition I've applied a hack for reducing memory leaks I discovered while looking around for optimised builds. This should reduce any issues you might have with Firefox getting progressively slower throughout the day (if you're on Windows).