Added compile time option to enable QMC
Update globaltypes.h

Addressed Franz comments
Merge pull request #275 from est77/qmc_option

Added compile time option to enable QMC
added 'save image' and 'quick save' image buttons to the rendertab
reversed regression
formatting beautification
Merge pull request #277 from jonathantopf/ui_buttons

Added 'save image' and 'quick save' image buttons to the rendertab.
cosmetic and formatting fixes.
tweaked tooltip text.
refactorings and cleanups.
refactoring.
added foundation::get_numbered_string() and foundation::get_numbered_string_max_value().
added foundation::find_next_available_path().
AOVs quick save now uses numbered filenames.
fake translucency is now purely additive.
added missing reference image.
patched our copy of Alembic to enable building with Visual Studio 2013.
added support for Visual Studio 2013.
code tweak.
updated Win32 Stack Walker to latest version (v14, dated 2013-01-07).