MWFixes

A pack of fixes and stability improvements for NFS Most Wanted.

Requires Most Wanted v1.3, won't work on 1.2!

List of patches:

Annoying "Pure virtual function call" when spawning a roadblock is fixed.
Random crash on Attrib::StringToLowerCaseKey fixed.
Random crash after evading pursuit fixed.
use_best_fit ignored, stabilizes the memory management subsystem
Custom purecall handler that will crash the game and allow dump generation instead of showing meaningless dialog box (optional)
Timebug fix (optional)