Fixed build script so it now can change between XML and GNATTest output.
Updated the build_script with more readable output when not using debug mode.
Reduced output to STDOUT and log file when not running in debug mode.
Improved readability of build_script and the output to log files.
Added list of test harness projects that fail to build to end of build_script.
Added list of test harness projects that successfully build to end of build_script.
Added XML test output as well as an extra check for output formats in the beginning.