Parser and forward slashes (windows)

Hi. I got a problem on windows platform while running on rhino.
r.js was tracing dependencies for our file and it was only finding this file itself.
I debugged r.js and found out that there was problem with paths. I passed name argument to r.js with windows style path (C:\workspace\test\file).

defQueue variable in completeLoad function (https://github.com/stforek/r.js/blob/master/dist/r.js#L1745) was containing paths without slashes:
"C: orkspace est ile"
Optimizer didn't throw any exception (and it should..).

I attached a test case.