tree ffa94a58ef5c2554269d5878c88a042ccca8b640
parent d8de81f2174c6f95c7e2a5cbcd14220f0ad3e3e8
author Stephen Hines <srhines@google.com> 1468016179 -0700
committer Stephen Hines <srhines@google.com> 1468016179 -0700

Switch libunwind_llvm over to building for NDK 21.

It would be preferable if this could build for API level 9, but it
depends on dl_iterate_phdr(), which only appears in API level 21 for
ARM.

Change-Id: I769a3ee19bf4a07cd75987251f2708b1f293407c