new test ant targets

[ataylor]

Ive added seperate ant targets for each of the type of tests we now have, unit-tests, timing-tests, integration-tests and performance-tests. all-tests still runs everything.

[ataylor]

you can also do:

ant -Dtests.param=**/org/jboss/messaging/tests/unit/**/*Test.class tests

and use a different test mask

[clebert.suconic]

A very minor issue:

The call to compile-report is being done inside "tests" target.

So, when you do all-tests, you will be compiling the reports about 4 or 5 times.

So I'm removing the call to compile-report from build-messaging.xml, and making build.xml to call it only once when the test running is completed.