Treat colon as a path separator

[xt0rted]

This adjusts how globbing works with script names so : is treated as /. To do this we swap those two characters before comparing them which is also how npm-run-all does it.

Changing the behavior of : allows the following scenarios now:

1. foo:* will match foo:bar but not foo:bar:baz
2. foo:*:baz will match foo:bar:baz
3. foo:** will match foo:bar and foo:bar:baz