Proposed changes to FindQt4.cmake

[Caleb Tennis]

> Is there something in qmake or some other config file that could be
> queried by cmake to determine this?  Seems to be a Mac only problem. For
> most systems all the qt libraries that go together are in the same
> place, and it would be bad to look for part of qt in a different
> place.   How does qmake handle this?

It's definitely a mac only problem - I have no idea why the qtuitools and qtscript
come as shared libraries instead of frameworks.  In fact, it might be "fixed" in Qt
4.3.

If I find a good way to query about it via qmake, I'll let you know.

Caleb