Fix exception_test for verify stack.
Fix exception_test for verify stack.

Create a fake native GC map as the verifier no longer creates the GC
map.

Change-Id: I94cfe444d8e9fec16e2affdf36b77fd32950f8f2

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst