cosmetics, update file headers of unsermon.c

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, start migration of unsermon (away from UD_COMPAT)

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, hand out receiver data through (experimental) ud_chck_sa()

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
fix, PEBKAC, initialise the sz slot of the src sa to the size of ud_sockaddr_u

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, rewrite ud_chck_sa() as ud_chck_aux() with more slots

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, provide UD_CHN() macro (converse of UD_SVC()) and express ctrl msg predicate in terms of that

through inline __ctrl_msg_p()

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
cosmetics, leave a minor note about the longevity private API

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, move ud-sockaddr.h inclusion in unserding.h to UD_COMPAT section

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, migrate unsermon to new API, losing the capability to decode and display uterus messages

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

* tool/unsermon:
  minor, migrate unsermon to new API, losing the capability to decode and display uterus messages
  chore, move ud-sockaddr.h inclusion in unserding.h to UD_COMPAT section
  cosmetics, leave a minor note about the longevity private API
  minor, provide UD_CHN() macro (converse of UD_SVC()) and express ctrl msg predicate in terms of that
  minor, rewrite ud_chck_sa() as ud_chck_aux() with more slots
  fix, PEBKAC, initialise the sz slot of the src sa to the size of ud_sockaddr_u
  minor, hand out receiver data through (experimental) ud_chck_sa()
  minor, start migration of unsermon (away from UD_COMPAT)
  cosmetics, update file headers of unsermon.c