K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2012-04-12T10:48:43.923688Z
K 7
svn:log
V 413
Add thread-private flag to indicate that error value is already placed
in td_errno. Flag is supposed to be used by syscalls returning
EJUSTRETURN because errno was already placed into the usermode frame
by a call to set_syscall_retval(9). Both ktrace and dtrace get errno
value from td_errno if the flag is set.

Use the flag to fix sigsuspend(2) error return ktrace records.

Requested by:	bde
MFC after:	1 week

END