and don't try to call it if it doesn't exist.

the --no-blocking-io and --no-whole-file options.  This adds it back in.

trees to reproducibly test performance on specified size sets.

an HTTP proxy.  This parallels the recent addition of a log message
for opening ssh connections.

This parallels the recent addition of a log message for opening ssh
connections.

gcc, to quieten its worries about parameters that must always be
unused.

don't it on a machine that does have supplementary groups would be a
security hole.  If this breaks anything we'll fix it later.

close fd, sleep, then try again.

rsync functions.

slash.

<http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2734739.html>

an error message.  (Colin Walters)

#100295.

include mtimes.

  #defiine lchown chown

could be bad on systems which have no lchown and where chown
follows symbollic links.  On such systems it might be better not to
try to chown symlinks at all.

we don't get stuck in a recursive loop trying to report a broken pipe
across that same broken pipe.  Debian bug #128632 (Colin Walters)