PHPunit test call script update

Fix for default PHP set via getting version from default PHP.
Add a verbose option and remove the fixed verbose setting from the phpunit config
Update the options call to add a usage info block

phpunit.xml

@@ -1,7 +1,7 @@
 <phpunit
 	cacheResultFile="/tmp/phpunit-corelibs.result.cache"
 	colors="true"
-	verbose="true"
+	verbose="false"
 	convertDeprecationsToExceptions="true"
 	bootstrap="4dev/tests/bootstrap.php"
 >