Separate options from arguments when calling cygpath
Separate options from arguments when calling cygpath

Calling `grails run --stacktrace` throws an error when startGrails is attempting to convert the arguments to a windows format.  By using a `--`, we separate the options to cygpath from the arguments cygpath tries to convert.

clockworkorange/grails-core,clockworkorange/grails-core,clockworkorange/grails-core,clockworkorange/grails-core,clockworkorange/grails-core