Split the AC_CHECK_FUNCS() line using backslashes.
Added FreeBSD support.
Added XXX comment -- need to be more liberal or careful about -lreadline.

Changed install targets so
(1) "make install" installs everything;
(2) more directories are built as needed;
(3) the X11R5 shell script install-sh is used (always).
(The script can't be called install.sh since some Make versions have a
default rule that copies "foo.sh" to "foo" when making "foo".)

Added target "smelly" which checks for non-Py-prefixed exported
symbols.

Added quick reference.

Changed #ifdef DEBUG slightly.

examples, which no longer live here.