BCrypt support

[Alan DeKok]

R. Jason Adams wrote:
> Has anyone tried added BCrypt password hash support to Freeradius? We're trying to move to a more secure way of storing passwords and BCrypt seems to be highly recommended.

  It should be easy enough to do.  Just poke rlm_pap to support it.
rlm_pap already does 5-10 different crypt methods, so the examples
should be there.

  And it will work for PAP authentication, and nothing else.

  Alan DeKok.