Hack round the FreeBSD iconv support in Freebsd 10. In 10 libc now
supports iconv however iconv.h is present under /usr/local.
Start to add support to build qemu for MinGW via a Cxc. This is a
work in progress and contains lots of hidden traps.
In config.py separate out of the canadian build status.
Qemu requires gettext, glib, libffi, and pixman. DTC is built
as a submodule.
On Mavrick provide a pkg-config command so avoid needing a pkgconfig.
The one here is only just good enough to work.
Provide an internal autotools build including libtool so qemu can
be built from git.