Add helper to release to get file by path
Test expected pod text for various files
Strip trailing space from pod text
Test the malformed pod text of BadPod dist
Don't index pod errors
Test that binary data isn't treated as pod
Ignore non-pod that might match a loose pod regexp

like binary data.

refs #364.
Ignore fake pod starting with "\r" also

Pod::Simple "splits" lines at \r, \n, or \r\n.
Test the pod text attribute when testing file doc
Tidy previous test (and add comments)
Improve munging of more bizarre non-pod