sleazy patch for info build

[Jeffrey A Law]

  In message < 19971028225228.27000@dgii.com >you write:
  > 
  > The problem is that if you have a system that #defines TIOCGETC,
  > configure gets a little overambitious and assumes you have a useful
  > struct tchars.  On [ at least ] OpenServer, this is the trap we fall
  > into, which causes the build of terminal.c to keel.
Yick.

  > Yes, I'm a little ashamed.   I think I'll still manage to sleep 
  > tonight somehow.   
Agreed.  It's gross.  Though I guess it's safe enough.


  > Tue Oct 28 22:50:06 1997   Robert Lipe  (robertl@dgii.com)
  > 	* info/termdep.h: If POSIX, #undef TIOCGETC for benefit of systems
  > 	that provide TIOCETC but not struct tchars.
I've installed it.
jeff