Migration to Visual C++ 2010, availability of x64 builds

Announcement for people using the 64-bit buildbot builds: starting dev_sdk_win_amd64 build 124, Panda correctly installs itself to the 64-bit view of the registry instead of the 32-bit view. This fixes interoperability issues with other Python installations and libraries (ie. the wxPython installer will now correctly detect Panda’s Python installation).

However, to prevent stale registry entries, you should explicitly run the uninstaller before upgrading to build 124 or above.