- (djm) Add summary of configure options to end of ./configure run

 - (djm) Add summary of configure options to end of ./configure run
 - (djm) Not all systems define RUSAGE_SELF & RUSAGE_CHILDREN. Report from
   Michael Stone <mstone@cs.loyola.edu>
 - (djm) rusage is a privileged operation on some Unices (incl.
   Solaris 2.5.1). Report from Paul D. Smith <pausmith@nortelnetworks.com>
 - (djm) Avoid PAM failures when running without a TTY. Report from
   Martin Petrak <petrak@spsknm.schools.sk>
 - (djm) Include sys/types.h when including netinet/in.h in configure tests.
   Patch from Jun-ichiro itojun Hagino <itojun@iijlab.net>