Also use dl_iterate_phdr() on CloudABI.

The unwinder now works on CloudABI. All exception-related libc++ tests
now pass.

This change was actually part of D8169, which also adds support for
FreeBSD. That, however, still requires some more polishing.


git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@233676 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed