K 10
svn:author
V 2
jh
K 8
svn:date
V 27
2009-10-11T12:32:25.887920Z
K 7
svn:log
V 508
- Catch SIGHUP to perform cleanup before exiting.
- Exit if getch() returns with an error other than EINTR. Otherwise
  systat(1) may get stuck in an infinite loop if it doesn't receive
  SIGHUP when terminal closes. [1]
- Remove attempt to clear stdio error indicators. getch() doesn't use
  stdio, making it useless. [2]
- Remove unneeded masking of getch() return value. [2]

PR:		bin/107171
Reviewed by:	bde
Approved by:	trasz (mentor)
Obtained from:	OpenBSD [1]
Suggested by:	bde [2]
MFC after:	1 month

END