Fix Visual Studio meta-projects on VS2008.
Fix Visual Studio meta-projects on VS2008.

* build/generator/gen_vcnet_vcproj.py
  (Generator.write_project):  Change the meta-project targets (such as
  __ALL__) to Utility project types so they don't cause issues when building
  with VS2008.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion