Support VS2012 and VS2013

Support building VS2012 and VS2013 environment
fixed cp35001

yield without expression sets valid location for None expression
fixed cp34892
fixed cp34910
fixed cp34837

subprocess.Popen accept any mapping as env
GetPointer works with Int64
Merge remote-tracking branch 'yYHernan/ipy-2.7-maint' into ipy-2.7-maint
Merge pull request #175 from paweljasinski/cp35001

fixed cp35001
Merge pull request #176 from paweljasinski/cp34892

fixed cp34892
changed to BytesConversion
Merge pull request #177 from paweljasinski/fstat

fixed cp34910
Merge pull request #178 from paweljasinski/cp34837

fixed cp34837