czmq: new package

Signed-off-by: Simon Dawson <spdawson@gmail.com>
[yann.morin.1998@free.fr: create dir as post-patch, not pre-configure]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>