Convert the AbsHoudini tests to lit tests. They weren't being run by the old
infrastructure so I have not bothered to update the Answer file. These tests
are still disabled by the lit.local.cfg file in the AbsHoudini folder because
the following tests fail or weren't even being run previously (these are left
unresolved because I do not know how these tests are meant to be run)

UNRESOLVED: Boogie :: AbsHoudini/f1.bpl (1 of 32)
UNRESOLVED: Boogie :: AbsHoudini/imp1.bpl (7 of 32)
UNRESOLVED: Boogie :: AbsHoudini/int1.bpl (8 of 32)
UNRESOLVED: Boogie :: AbsHoudini/multi.bpl (9 of 32)
FAIL: Boogie :: AbsHoudini/quant3.bpl (22 of 32)
FAIL: Boogie :: AbsHoudini/quant5.bpl (28 of 32)
Fixed state capture concurrency bug with Staged Houdini
Merge
Fix lit test suite when running Boogie under a path that contains
spaces.
Merge