K 10
svn:author
V 8
deischen
K 8
svn:date
V 27
2002-01-10T02:32:30.000000Z
K 7
svn:log
V 247
Use a spare slot in the machine context for a flags word to indicate
whether the machine context is valid and whether the FPU state is
valid (saved).

Mark the machine context valid before copying it out when sending a
signal.

Approved by:	-arch

END