Upgrade to the pam_ssh module, version 1.1..

(From the author:)
Primarily, I have added built-in functions for manipulating the
environment, so putenv() is no longer used. XDM and its variants
should now work without modification. Note that the new code uses
the macros in <sys/queue.h>.

Submitted by: Andrew J. Korty <ajk@iu.edu>