Unify file paths when matching patterns in glob
Unify file paths when matching patterns in glob

On Windows paths returned by filepath packages use
backslashes and include volume name. Convert all paths
to use forward slashes so that the same glob pattern
works on both Linux and Windows.

Signed-off-by: Anthony Emengo <7b3c5a7825e2f856203b8d882230abcb78036abf@pivotal.io>

cloudfoundry/gofileutils,cloudfoundry/gofileutils