DRC and LVS scripts don't report true source code line in log

[klayoutmatthias]

With "verbose", DRC and LVS logs can be enabled. This allows tracking the progress and gives timing and memory information.

Currently (0.26.4), the report does not show the true source code line but implementation details, e.g.

"extract_devices" in: _drc_engine.rb:1373
Elapsed: 8.900s
"_input" in: _drc_engine.rb:1373
Elapsed: 0.010s
"sized" in: _drc_engine.rb:1414
Elapsed: 0.040s
"flatten" in: _drc_engine.rb:1373