build,win: fix node.exe resource version

When MSBuild invokes rc.exe, it passes NODE_TAG unstringified, but
passes it correctly to cl.exe. Hence, this workaround was made to
apply only to the resource file.

Fixes: https://github.com/nodejs/node/issues/2963
PR-URL: https://github.com/nodejs/node/pull/3053


Reviewed-By: Alexis Campailla <orangemocha@nodejs.org>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>