Log Message:
x11/drawterm: update to latest snapshot.

Sync package with most recent upstream commit (20231223).
Noteworthy changes:

* qio: fix memory leak in qproduce()
* use kernels default iounit for mount
* use 32k IOUNIT for 9p
* devfs-posix: allow creation of files with exec bit set
* gui-cocoa: opengl -> metal (thanks jxy & Keegan)
* libsec: sync from 9front
* import drawlock fixes from 9front (thanks foura
* Make.linux: dont hardcode libpipewire location
* fix CONF=pthread