Fix gdb support in run-test and run-test-jar

Test: ./art/test/run-test --gdb --64 --host 466-get-live-vreg
Test: ./art/test/run-test --gdbserver --64 --host 466-get-live-vreg
Change-Id: I5cb2cf615834456adbd662757a6c36c8bf00acc2
2 files changed