This removes the shlib hack from the install step, which repackaged the
static library as the shared one. It also has the benefit of making the
port work with the Clang toolchain :^).
Much redundancy is removed from package scripts with this system.
It also supports simple dependency management, uninstalling (through
BSD ports style plist files), cleaning up after itself (with clean,
clean_dist, clean_all commands), etc.
