Use environment variables for include directories; Don't rely on MFC
being present
Make solution work in both VSE2010 and VSE2012
Added a second push to talk hotkey
Merge pull request #129 from paibox/master

Added a second push to talk key to the audio settings
fix to the multi PTT hotkey code
Made graphics capture hook to use more common API functions when getting a temp swap chain
Merge remote-tracking branch 'upstream/master'
Merge branch 'envproj'