Huge update to ITFoundation. I've gone through every file (except queue.h

and queue.c) and fixed tabs and updated the header prefix comment to the
current style we're using. I've also tried to do a good job of setting
the subversion properties to match my auto-props. I've also updated build
settings so that it only links against Foundation and updated or removed
things that required AppKit or GUI portions of Carbon, or otherwise
belong in a different framework (such as ITKit).