chore, remove .ggo remnants

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, remove getopt.h checks (formerly needed for AIX in conj. with ggo)

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Merge branch 'feat/go-yuck'

* feat/go-yuck:
  chore, remove getopt.h checks (formerly needed for AIX in conj. with ggo)
  chore, remove .ggo remnants
  minor, go yuck for shack(1)
  minor, go yuck for hxdiff(1)
  minor, go yuck for clitoris tool
  minor, activate yuck build in build-aux/ if not found through pkgconfig
  minor, import yuck