relibc: bump submodule to c73e4227 (cfgetispeed/cfsetispeed Redox impl)

Bump the relibc submodule pointer to the Round 8 commit that
implements cfgetispeed, cfgetospeed, cfsetispeed, cfsetospeed
on the Redox target (previously all returned 0 or EINVAL
unconditionally). The impl uses two new fields added to the
Redox termios struct (__c_ispeed, __c_ospeed) for the stored
speed values. Without this, serial tools (minicom, screen, cu)
that query baud rate always saw 0 on Redox.

The full canonical build (./local/scripts/build-redbear.sh
redbear-mini) requires a prefix rebuild to regenerate the
prefix's libc.a; this is what 'touch relibc && make prefix'
does in the Redox build system.
This commit is contained in:
2026-07-27 10:01:29 +09:00
parent c20032435d
commit f6420ec8c3