commit 383eef45f6951482bdb929782422fd8550c9e6e6
author Mark Wielaard <mark@klomp.org> Thu Jan 18 14:03:43 2018
committer Mark Wielaard <mark@klomp.org> Sat May 19 14:06:21 2018
tree 537ffd5d3ed34e2b32ca5c26ac4c1c1a2b7f40d4
parent 77cbbbd40432ca79f052c3d5bb620afbced0c1a1

libdw: dwarf_get_units find split units from .dwo.

For a skeleton DIE dwarf_get_units should provide the split DIE as subdie.
This implements that by trying to find the (named) .dwo file and finding
the matching CU in it. The .dwo file is search relative to the current
DWARF or using the comp_dir of the skeleton DIE.

Also fixes a small issue with str_offsets_base_off which is tested in the
new testcase (by getting the name of the split CU DIE).

Signed-off-by: Mark Wielaard <mark@klomp.org>