[osx] recent osx update broke exceptions tests

[alk]

SUBJ. We fail tcmalloc_unittest test which verifies that OOM throws exception. Appears to be whatever getsectdata stuff they warn us is deprecated that we use for equivalent of .malloc_hook section (which is used to implement MallocHook_GetCallerStackTrace).

Fix is in works, although it is bigger change than I'd like.

[alk]

Notably, reverting commit 6683e4f "fixes" the problem, but only by having operator new etc being much less efficient then they are on other OS-es. Might help temporarily work around the issue.