Only store major version of AddIn in VS project file.

This avoids vcproj file churn.

Also, get the version number directly from the assembly
rather than parsing the .AddIn file.

Also, fix for default debugger args. Without this change
the PPAPI default debugger args  don't work since
TargetPath ends up being empty.  The side effect would
be that the PPAPI project would fail to run if the
user deleted their .user file.


Review URL:

git-svn-id: 050acbb0-2703-11df-ab0a-9f3f633ae91d
5 files changed