Smarter support directory discovery in tests.
Smarter support directory discovery in tests.

Required to work well under spec --tests=

tyewang/invoke,mattrobenolt/invoke,kejbaly2/invoke,kejbaly2/invoke,frol/invoke,mkusz/invoke,pyinvoke/invoke,sophacles/invoke,pfmoore/invoke,singingwolfboy/invoke,alex/invoke,frol/invoke,mattrobenolt/invoke,pfmoore/invoke,pyinvoke/invoke,mkusz/invoke