* src/twaalgos/dtgbasat.cc, src/twaalgos/dtgbasat.hh: Rename as...
* src/twaalgos/dtwasat.cc, src/twaalgos/dtwasat.hh: ... these.
* src/bin/autfilt.cc, src/tests/ikwiad.cc, src/twaalgos/Makefile.am,
src/twaalgos/postproc.cc, wrap/python/spot_impl.i: Adjust.
* NEWS: Mention the renamings.