Eliminate boilerplate of having each test manually assign to `mydir` by calling
`compute_mydir` in lldbtest.py.
Differential Revision: https://reviews.llvm.org/D128077
Identical to previous commits that just add a standard library template to the
supported template list and test it. Adding this rather obscure class to the
template list is mostly caused by the std::deque test unexpectedly referencing
this type when testing against newer libc++ versions on macOS.
Fixes TestQueueFromStdModule and TestQueueFromStdModule on macOS.
Fixes rdar://73213589