Update to use compiler globbing

[garyb]

As mentioned in #36, Windows sucks. Er, I mean has a limit on the length of a command, and as of purescript/purescript#1155 the compiler now supports glob arguments directly for input source files.

I'd suggest now we should move away from piping gulp.src(...) into the tasks, and just make a src option argument - this way globbing for ffi and src can behave consistently for the compiler's glob behaviour (which may subtly differ from gulp's), and will also solve our path length problem.

Passing through gulp.src will unavoidably expand the globs (I think), so I don't know if there is another way to solve the path issue other than this. We may still have issues with cross-spawn and this, as that seems to impose an extremely short path length, but it will be a step in the right direction at least.

[ethul]

Thanks @garyb. I agree that we will probably have to pass the glob arguments as options instead of piping the files with gulp.src. Regarding cross-spawn, we can see how it goes. If it is still causing an issue, we can maybe find an alternative.