Use libandroid_support when building libunwind.
I'm not really sure how we were getting away with this before,
because including <cstdlib> (via <new>, via libunwind.cpp) requires
that we have a declaration of quick_exit and at_quick_exit available.
When building this using checkbuild.py's dependency tracking rather
than the old hacky prebuilt method, we don't find these (nor should
we) when targeting API levels below 21.
Test: ndk/checkbuild.py
Bug: None
Change-Id: I9265cfc7ee3e87ab138280aca5afcc3b327f54e3
1 file changed
