- (djm) [channels.c channels.h] bz#2135: On Solaris, isatty() on a non-
   blocking connecting socket will clear any stored errno that might
   otherwise have been retrievable via getsockopt(). A hack to limit writes
   to TTYs on AIX was triggering this. Since only AIX needs the hack, wrap
   it in an #ifdef. Diagnosis and patch from Ivo Raisr.
 - (djm) [sshlogin.h] Fix prototype merge botch from 2006; bz#2134