Begin autotools sanitization sequence by requiring ports to explicitly
specify which version of {libtool,autoconf,automake} they need, erasing
the concept of a "system default".
For ports-in-waiting:
USE_LIBTOOL=YES -> USE_LIBTOOL_VER=13
USE_AUTOCONF=YES -> USE_AUTOCONF_VER=213
USE_AUTOMAKE=YES -> USE_AUTOMAKE_VER=14
Ports attempting to use the old style system after June 1st 2004 will be
sorely disappointed.
- Assume maintainership; the previous maintainer - an ex-coworker - has
expressed no further interest in maintaining this port
- Remove spurious build-time dependency on doxygen
- HAS_CONFIGURE -> GNU_CONFIGURE
- Add post-install target to install some documentation and examples