Merged 23111 from the trunk.
(Core VFD and Mac OS X I/O changes)
Tested on:
64-bit Windows 7, Visual Studio 2010, CMake
64-bit Mac OS X Snow Leopard (Fred), Fortran, C++
64-bit BE Linux (Ostrich), Fortran, C++
32-bit LE LInux (jam), Fortran, C++ (also parallel w/ Fortran)