Fixes for 64 bit Windows build: - fix CMake files to choose correct Simbody library names - added many casts to avoid warnings due to size_t and ptrdiff_t values being put into int variables (size_t is unsigned long long for 64 bit builds; ptrdiff_t is long long). (There are now no warnings at all, at least for VS10.)
Fixes for 64 bit Windows build:
- fix CMake files to choose correct Simbody library names
- added many casts to avoid warnings due to size_t and ptrdiff_t values being put into int variables (size_t is unsigned long long for 64 bit builds; ptrdiff_t is long long). (There are now no warnings at all, at least for VS10.)

I also added an advanced variable in the CMake build to limit the number of parallel compilations that are performed; default is still no limit.

Problems:
- testProbe is failing (both 32 and 64 bit builds)
- testOptimizationExample fails in 64 bit build
- testWrapping crashes my machine in 64 bit mode -- but first its memory use goes to over 2.5GB!
- testExampleMainRuns launches the visualizer and hangs until the visualizer is manually closed

git-svn-id: 9e047e1e624cce0a2485e750063112e834f85522@8004 fc29be9c-2cb0-420d-b520-73dbd18add6e

opensim-org/opensim-gui,opensim-org/opensim-gui,opensim-org/opensim-gui,opensim-org/opensim-gui