Pre-release of 2.1.7

[Garber, Neal]

> Does it apply cleanly to the current git head?

I created it about 2 weeks ago against the then current git head.  It changes rlm_eap_mschapv2.c, rlm_mschap.c & radius.h.  I don't believe any of these have changed in the past 2 weeks, so it should still apply cleanly.

I've been running with it applied for several weeks now without issues.  If you have a chance to test it, that would be great Arran.  

Thanks..