Fix dependencies for VS200x solution generation.
Fix dependencies for VS200x solution generation.

Since we aren't generating the apr project files for VS200x anymore
we need to make sure the solution file we generate contains the
correct guids or else project dependencies will not work.

* build/generator/gen_vcnet_vcproj.py
  (Generator.getguid): New method to get the guid of an existing project
  if it has one.
  (Generator.write): Use getguid if it is an external project and fall
  back to makeguid as needed.



git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@863078 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,wbond/subversion