PennMUSH Incorp 182p4

PennMUSH Incorp 182p4
  * stdin and stdout weren't getting closed, potentially causing
    problems when trying to log out of a shell after starting
    a mush. Reported by K Moon. [SW]
  * Receipt of a SIGUSR1 (Causing a shutdown/reboot) is explictly
    logged. Suggested by Interloper. [SW]
  * NetBSD compile and general warning fixes. [SW]
  * 'make portmsg' works, and portmsg.c rewritten to current
  * Favor difftime(3) over subtraction of time_t variables. [SW]
    Penn standards. [SW]
  * Several references of toloewr changed to DOWNCASE, and toupper to
  * UPCASE