aggregate: Add 33, testing struct lits in array literals.
types: Add 30 and 31 with more scope coverage.
statements: Add 5, 6, and 7; testing cfgs.
exps: Add 44, testing operator overloading.
exps: Add 45, property rewriting this rewrites.
exp: Update 45 to catch more cases of rewrite failure.
exps: Add 46 through 49, testing labelled calls.
exps: Add 50, testing labels and default argument interactions.
tesla: searchDir integration.
watt: A few glob tests.