Embed libexecinfo and libb64 from bionic
Musl doesn't provide execinfo or b64_* functions, embed implementations
exported from bionic. The bionic versions don't build against glibc,
so disable building musl in a glibc build. The glibc build was present
to prevent build errors from getting submitted when only glibc builds
were tested in presubmit, but the aosp-build-tools build includes a musl
build now.
Bug: 190084016
Test: m USE_HOST_MUSL=true host-native
Change-Id: Ida4a0d591b23859fbc91e38a0b0a9b43859b497c
2 files changed
