Simplify execution of web tier test suite

[jng]

The PHP-driven web tier test suite can be improved in the following fashion:

• Add a batch file that can prepare the required environment for running the test suite from the command line
• The PHP test suite should have an option to exclude the mapagent tests (as this requires a setup of a web server, which may be difficult to set up in an automated fashion)
• XML content assertions should not be sensitive to whitespace. These tests only care that the XML content matches.

[jng]

Fixed r7178