PlatformToolSet version 110 is for VC2012. Problem reported (with solution) by Dave Arnold <darnold@adobe.com>.
* src/builds/win32: Renamed to... * src/builds/windows: This. * src/builds/windows/vc2010/*: Updated to handle x64 target. * src/builds/windows/*.mk, docs/INSTALL.GNU: s/win32/windows/ where appropriate.