[CMake] return and break commands

[Ken Martin]

This is the commit that has the changes in it.  Lots of little changes
mainly.

http://www.cmake.org/Testing/Sites/DASH2.kitware/Win32-vs70/20080123-1550-Co
ntinuous/Update.html

Ken

Ken Martin PhD 
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065
518 371 3971 

> 
> I don't mind porting the bits myself, but as it's cvs it's a bit hard to
> determine what changes are required :).  (No atomic commit numbers!)
> 
> I don't suppose you have a commit email or log somewhere which would
> tell me all the version numbers of that change do you?
>