minor, provide PKG_CHECK_VAR convenience macro for pkgconfig file variables

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, check for unsermarkt (specifically for the svc-uterus service)

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
fix, PEBKAC, always set ctrl->data in quo-tws as we conditionalise over that later on

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

* tool/quo:
  fix, PEBKAC, always set ctrl->data in quo-tws as we conditionalise over that later on
Merge branch 'bld/dist' into next

* bld/dist:
  minor, check for unsermarkt (specifically for the svc-uterus service)
  minor, provide PKG_CHECK_VAR convenience macro for pkgconfig file variables
minor, use unsermarkt's svc-uterus to produce wire representations of qmeta and ute traffic

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
chore, only mention static version of libsvc-uterus

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

* feat/svc-uterus:
  chore, only mention static version of libsvc-uterus
  minor, use unsermarkt's svc-uterus to produce wire representations of qmeta and ute traffic
Merge branch 'next'

* next:
  chore, only mention static version of libsvc-uterus
  minor, use unsermarkt's svc-uterus to produce wire representations of qmeta and ute traffic
  fix, PEBKAC, always set ctrl->data in quo-tws as we conditionalise over that later on
  minor, check for unsermarkt (specifically for the svc-uterus service)
  minor, provide PKG_CHECK_VAR convenience macro for pkgconfig file variables
  minor, migrate quo-tws to new ud api, packing part
  minor, migrate quo-tws to new ud api, socket part
  chore, up the minimum unserding version we're willing to support