Build more of libdwfl for perf(1).

Change-Id: Ie4290abcaaa480b548737a121dbd84bd22d77901
Merge "Build more of libdwfl for perf(1)."
Stop breaking the Darwin build.

Change-Id: I1d3e392fae0fcf21d6112504dee5e618a2af0602
Merge "Stop breaking the Darwin build."
Only the host part of the elfutils build should be conditional.

Change-Id: I6be2c64a8da66ea1d6163154fbcb96683aff76dc
Merge "Only the host part of the elfutils build should be conditional."
Disable Clang for all elfutils libraries.

Three of them have nested functions and one has some
warning about K&R promoted parameter.

BUG: 17281788
Change-Id: I4ce397876af7c47153e27e11869a7659dbf1b3e3
Merge "Disable Clang for all elfutils libraries."