Changes in test suite

Dear LLVM'ers,

  Today I moved some items around in the test suite. Specifically, I moved some regression tests into llvm/test/Programs/SingleSource/Regression.

  For those of you updating from CVS, you will need to re-run the configure script in order to populate your object tree with the new Makefiles that run these tests.

  We had a few glitches with this earlier today, but hopefully we've got everything fixed.

  Please let us know if you encounter problems building or testing LLVM.

  Thanks.

Regards,

John T. Criswell