Item12446: Use local regex for better compatibility

Extracted $version::LAX components from version 0.96.
FlorianSchlichting unit tests note that these were added in 0.78, and
the minimum version we require is 0.77.

git-svn-id: http://svn.foswiki.org/trunk/core@16673 0b4bb1d4-4e5a-0410-9cc4-b2b747904278