- Fix compilation on systems with AFS. Reported by

 - Fix compilation on systems with AFS. Reported by
   aloomis@glue.umd.edu
 - Fix installation on Solaris. Reported by
   Gordon Rowell <gordonr@gormand.com.au>
 - Fix gccisms (__attribute__ and inline). Report by edgy@us.ibm.com,
   patch from Markus Friedl <markus.friedl@informatik.uni-erlangen.de>
 - Auto-locate xauth. Patch from David Agraz <dagraz@jahoopa.com>
 - Compile fix from David Agraz <dagraz@jahoopa.com>
 - Avoid compiler warning in bsd-snprintf.c
 - Added pam_limits.so to default PAM config. Suggested by
   Jim Knoble <jmknoble@pobox.com>