K 10
svn:author
V 4
ache
K 8
svn:date
V 27
1997-11-05T23:33:58.000000Z
K 7
svn:log
V 393
1) Fix longstanding bug:
	trap 'echo xxx' 1 2 3 15
	read x
is not interrupted by ^C (due to restartable read syscall) and must be
interrupted per POSIX
Worse case:
	read -t 5 x
hangs forever after ^C pressed (supposed to timeout after 5 secs)
Fixed by adding siginterrupt(signo, 1) after catch handler installed

2) Do not reinstall sighandler immediately after it is called,
BSD do it for us

END