K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2008-08-08T19:39:11.489473Z
K 7
svn:log
V 506
Fix the hangs reported with the real mode BTX:
- I had errantly assumed that all user requests should run with interrupts
  enabled.  User requests for software interrupts, however, need to disable
  interrupts (and tracing) just like hardware interrupts.
- Disable alignment checking when emulating a hardware interrupt as well
  (based on the description of the real mode operation of the 'INT'
  instruction in the IA-32 manuals).
- Use constants for fields in %eflags.

Tested by:	bz
MFC after:	3 days

END