Matt Harbison <matt_harbison@yahoo.com> [Mon, 16 Nov 2015 16:56:00 -0500] rev 27057
test-run-tests: conditionalize the $TESTDIR check for Windows separator
The variable uniformly uses '\' separators, so the straight equality check with
'/' separating the last component fails. It also doesn't like having the quote
appear in the middle of the string when testing.