Valgrind is complaining about use of uninitialized memory in
absl::GetStackTrace, and the cases where it complains the backtraces are
incomplete. Note: this means that jemalloc heap profiling no longer
works out of the box. Advanced users who want to enable jemalloc heap
profiling will now have to revert this change and build from source.
Remove the use of relative paths. A header at foo/bar.h could be included by
files under foo/ with "bar.h", but would be included everywhere else as
"foo/bar.h". Adjust so that every include references such a header with the
latter form.
Signed-off-by: Robert Escriva <rescriva@dropbox.com>