minor, allow stack in fixc_fixup() to grow (and shrink)

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

* core/render-fixml:
  minor, allow stack in fixc_fixup() to grow (and shrink)
minor, make fixc_rndr_s str slot const to indicate that it's fixc's responsibility

Signed-off-by: Sebastian Freundt <freundt@ga-group.nl>
Revert "minor, make fixc_rndr_s str slot const to indicate that it's fixc's responsibility"

This reverts commit ce5cce0da9304caaf60ddaf744ce65441e6d16d8.

Not feasible.
minor, prefer mmap based memory allocation all the way through

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

* core/render-fixml:
  minor, prefer mmap based memory allocation all the way through
  Revert "minor, make fixc_rndr_s str slot const to indicate that it's fixc's responsibility"
  minor, make fixc_rndr_s str slot const to indicate that it's fixc's responsibility