libc-test faster than os-test for me, now there's no header bits

nice ice

s/ i/ ni/

[illumos-gate] 18224 Update to tzdata 2026c -- Robert Mustacchi <rm⊙fo>

[illumos-gate] 18234 duplocale() fails to set loc->locname in cloned locale -- Bill Sommerfeld <sommerfeld⊙ho>