I had moved libXThrStub into libX11, because it seemed unnecessary. However,
because libc_r symbols are also weak, the weak stubs in libX11 would interfere,
however they don't if they are in a library linked by libX11. The most common
manifestation of the problem was:
GThread-ERROR **: file gthread-posix.c: line 137 (g_thread_impl_init): error
'Invalid argument' during 'pthread_getschedparam (pthread_self(), &policy,
&sched)'
in glib apps.
PR: ports/75477
Submitted by: KIMURA Yasuhiro, yasu at utahime dot org
Testing by: marcus
df0e9fb363