[WinOF] Use DIFxApp (Driver Install Frameworks for Applications) to install drivers instead of home-grown CustomActions using devman or dpinst.exe. DIFxApp mods resulted in rearranging WIX src files into separate as DIFxApp can not tolerate multiple .inf files in a single directory.
The big win is to use WDK supplied driver install functions which then allows all supported OS flavors to use the Driver Store which results in the user not having to choose which HCA model to install (specifically Server 2003 & XP); The 'default' driver choice is Mellanox HCA.
git-svn-id: svn://openib.tc.cornell.edu/gen1/trunk@2261
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