Added files to support building on a Debian system

This produces two packages: libopendnp3-automatak and
libopendnp3-automatak-dev.  The first contains the actual C++ bindings
and the second contains the C++ header files needed for a wrapping
application.
Issue #22 - added support for C++ components

This change implements DEB support for libopendnp3, libopendnp3-dev, and
libopendnp3-cpp-demos.
Removing C++ demo autoconf/automake files

This functionality has been merged into the main autoconf/automake
scripts, so no reason to have a second set hanging around.