“If two pointers p and q of the same type point to different that are
not members of the same object or elements of the same array or to
different functions, or if only one of them is null, the results of
p<q, p>q, p<=q, and p>=q are unspecified.”

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

Closes #28 github issue.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

$(builddir) is always ., except apparently on automake 1.9 which
doesn’t define it.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

[andersk@mit.edu: Move code to new third/libstddjb directory]

Use selfpipe in our client, server, and examples.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>

environ doesn’t work on OS X.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>