RFR(XS): 8251349: Add TestCaseImpl to OverloadCompileQueueTest.java's build dependencies

[Evgeny Nikitin]

Hi,

Bug: https://bugs.openjdk.java.net/browse/JDK-8251349
Webrev: https://cr.openjdk.java.net/~enikitin/8251349/webrev.00/

The test loads said class (TestCaseImpl) as a resource from disk. The 
test obviously needs the class to get compiled in advance.

The change has been checked in mach5 for the 5 common platforms (passed).

Please review,
/Evgeny Nikitin.