K 10
svn:author
V 8
deischen
K 8
svn:date
V 27
2002-01-10T02:36:30.000000Z
K 7
svn:log
V 324
Use a spare slot in the machine context to identify the context format
and to inherently verify its validity.  Alpha signal frames and trap
frames are different; this field identifies which format the context
is

Set the machine context format (signal frame) before copying it out
when sending a signal.

Approved by:	-arch

END