Following up on r36160 and others, promote several Visual C++ warnings to errors.
Following up on r36160 and others, promote several Visual C++ warnings to
errors.

* build/generator/vcnet_vcproj.ezt
  Add /we arguments to change several warnings in errors.
  
See http://msdn.microsoft.com/en-us/library/8x5x43k7(VS.80).aspx for
the warning definitions.

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