build: fix cherry-pick ooops, fix comment wording

PR-URL: https://github.com/nodejs/io.js/pull/2036
Reviewed-By: Alexis Campailla <alexis@janeasystems.com>

vcbuild.bat

@@ -122,13 +122,13 @@ goto exit
 if defined noprojgen goto msbuild
 
 @rem Generate the VS project.
-python configure %download_arg% %i18n_arg% %debug_arg% %nosnapshot_arg% %noetw_arg% %noperfctr_arg% --dest-cpu=%target_arch% --tag=%TAG%
+python configure %download_arg% %i18n_arg% %debug_arg% %snapshot_arg% %noetw_arg% %noperfctr_arg% --dest-cpu=%target_arch% --tag=%TAG%
 if errorlevel 1 goto create-msvs-files-failed
 if not exist node.sln goto create-msvs-files-failed
 echo Project files generated.
 
 :msbuild
-@rem Skip project generation if requested.
+@rem Skip build if requested.
 if defined nobuild goto sign
 
 @rem Build the sln with msbuild.