ego, update copyright years in c.ac

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, provide --enable-tzmap-fetching to configure, ...

Only download and compile (and install) tzmaps if that flag is given.

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'bld/dist'

* bld/dist:
  minor, provide --enable-tzmap-fetching to configure, ...
  ego, update copyright years in c.ac