Link GSS mechanics modules against libgssapi so they will not fail due
unresolved symbol errors when in turn libgssapi was loaded with RTLD_LOCAL
flag set (which is the default).
Approved by: re (kib)
is based on an old implementation from the University of Michigan with lots of
changes and fixes by me and the addition of a Solaris-compatible API.
Sponsored by: Isilon Systems
Reviewed by: alfred