chore, conditionalise on ol_items in gq.c resizer code ...

because that's the pointer that gets memcpy()'d.

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
fix, PEBKAC, also rebuild linked list pbuf of a quoq_t upon resize

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
fix, PEBKAC, also rebuild linked list norm of a subq_t upon resize

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
fix, PEBKAC, also count items in the norm queue of a subq_t

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

* code/hygiene:
  fix, PEBKAC, also count items in the norm queue of a subq_t
  fix, PEBKAC, also rebuild linked list norm of a subq_t upon resize
  fix, PEBKAC, also rebuild linked list pbuf of a quoq_t upon resize
  chore, conditionalise on ol_items in gq.c resizer code ...
minor, provide tws_sub_quo_cont() to subscribe by contract (tws_cont_t)

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
minor, implement double subscription, subscribe contracts directly and then again when secdef data is available

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

* feat/double-sub:
  minor, implement double subscription, subscribe contracts directly and then again when secdef data is available
  minor, provide tws_sub_quo_cont() to subscribe by contract (tws_cont_t)
Merge branch 'next'

* next:
  minor, implement double subscription, subscribe contracts directly and then again when secdef data is available
  minor, provide tws_sub_quo_cont() to subscribe by contract (tws_cont_t)
  fix, PEBKAC, also count items in the norm queue of a subq_t
  fix, PEBKAC, also rebuild linked list norm of a subq_t upon resize
  fix, PEBKAC, also rebuild linked list pbuf of a quoq_t upon resize
  chore, conditionalise on ol_items in gq.c resizer code ...