[PATCH] libdw: Try both the relative and absolute paths when finding a .dwo file.

[Mark Wielaard]

On Fri, 2018-06-01 at 13:23 +0200, Mark Wielaard wrote:
> We would give up if one of them failed. With this fixed a self-test with
> make check succeeds when building elfutils itself with CFLAGS set to
> "-gdwarf-4 -gdwarf-split -O2".

Pushed to master.