Update PHPUnit to 4.1.
Add testsuite configuration.

This enables phpunit to be run without specifying the test suite
directory on the CLI.
Enable strict code coverage.
Access PHPUnit as a library for gathering report.

See dominionenterprises/util-php#32 and dominionenterprises/util-php#33.
Merge pull request #6 from nubs/master

Use PHPUnit strict coverage and gather coverage statistics using library interface.