waf build-system working; configuration lacking still.

I still need to implement the configuration mechanisms for determining
which sound APIs are available for use on a given platform, as well as
the endianness of a given platform.

Additionally, some simplified support for cross compilation would be a
plus.
Migrated to basic waf build-system.

distcheck is broken on windows, I have a patch in line to fix this,
so hopefully that will get in the waf tree soon-ish.