libU77 patches for i386-mingw32

[Jeffrey A Law]

  In message <9801311841.AA09416@modi.xraylith.wisc.edu>you write:
  > Looks like I never sent in the following patch for libU77. Needed for
  > mingw32 and possibly few other braindead runtimes. Diffs against
  > egcs-980129.
  > 
  > Thu Dec 18 18:40:17 1997  Mumit Khan <khan@xraylith.wisc.edu>
  >        
  > 	* libU77/configure.in (getlogin,getgid,getuid, kill,link,ttyname): 
  > 	Check.
  > 	* libU77/config.h.in (HAVE_GETLOGIN, HAVE_GETGID, HAVE_GETUID,
  > 	HAVE_KILL, HAVE_LINK, HAVE_TTYNAME): New defs.
  > 	* libU77/getlog_.c: Conditionalize for target platform. Set errno
  > 	to ENOSYS if target libc doesn't have the function.
  > 	* libU77/getgid_.c: Likewise.
  > 	* libU77/getuid_.c: Likewise.
  > 	* libU77/kill_.c: Likewise.
  > 	* libU77/link_.c: Likewise.
  > 	* libU77/ttynam_.c: Likewise.
Thanks.  Installed.  Not sure how we missed it -- it's possible I
lost it..

jeff