further explore the use of a concrete path to specify where a pattern match search should begin

[djhaynes]

We should further explore the use of a concrete path to specify where a pattern
match search should begin rather than relying on optimizations that require the
parsing of a regular expression.

Please see the following oval-developer-list post for additional information.

http://making-security-measurable.1364806.n2.nabble.com/Pattern-matching-for-paths-td6718764.html