minor, install unsermon.h so DSOs can relate to entry points

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, kick svc-uterus unsermon DSO, now to be found in unsermarkt

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, kick uterus check, unserding is now free from external deps (except libev)

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

* bld/dist:
  chore, kick uterus check, unserding is now free from external deps (except libev)
  minor, kick svc-uterus unsermon DSO, now to be found in unsermarkt
  minor, install unsermon.h so DSOs can relate to entry points