Support target and args in build.cmd on Windows.
Support target and args in build.cmd on Windows.

For example, enable `build.cmd CreateNuget -st` by passing all args from build.cmd to
FAKE, if build.cmd has at least one arg.

RMCKirby/FAKE,rflechner/FAKE,MiloszKrajewski/FAKE,MichalDepta/FAKE,MichalDepta/FAKE,rflechner/FAKE,beeker/FAKE,MiloszKrajewski/FAKE,mglodack/FAKE,Kazark/FAKE,MichalDepta/FAKE,beeker/FAKE,RMCKirby/FAKE,rflechner/FAKE,MiloszKrajewski/FAKE,mglodack/FAKE,Kazark/FAKE,beeker/FAKE,Kazark/FAKE,beeker/FAKE,Kazark/FAKE,MichalDepta/FAKE,RMCKirby/FAKE,rflechner/FAKE,MiloszKrajewski/FAKE,mglodack/FAKE,RMCKirby/FAKE,mglodack/FAKE