filemq: bump git snapshot

For API compatibility with czmq version 2.2.0.

Fixes:
http://autobuild.buildroot.net/results/971/971e2f88a533cc829516b1cf426f6b1c27d0d82b/



Also, switch to github helper.

Cc: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>