[CMake] PKGCONFIG backward compatibility on CVS trunk.

[Bill Hoffman]

Alan W. Irwin wrote:
>
> Anyhow, could we finish off this issue?  I hate to see something so close
> to solution hang fire like this.
OK, done, I remove the PKGCONFIG from FindPkgConfig, and added the
deprecated message in UsePkgConfig, and reversed it to its old way of 
doing things.
If you run into the \n problem, then you should stop using it anyway.   
If you are already
using it, then you must have already put a work around for \n  in you 
cmake files.

Checking for path: /cvsroot/CMake/CMake/Modules
Unrestricted user: hoffman
/cvsroot/CMake/CMake/Modules/FindPkgConfig.cmake,v  <--  FindPkgConfig.cmake
new revision: 1.3; previous revision: 1.2
/cvsroot/CMake/CMake/Modules/UsePkgConfig.cmake,v  <--  UsePkgConfig.cmake
new revision: 1.5; previous revision: 1.4