eg:
[foo]
...
matches any executable 'foo'
[/usr/bin/foo/]
...
matches any executable under the directory /usr/bin/foo/
Exact matches continue to function as before.
PR: bin/66769
Submitted-by: Dan Nelson
This is an optional feature, disabled by default.
This will be useful to people testing the various POSIX threading
libraries under -CURRENT but can easily serve other needs.