K 10
svn:author
V 6
marius
K 8
svn:date
V 27
2008-08-24T20:02:18.409584Z
K 7
svn:log
V 293
MFamd64: r133413

In syscall, always make a copy of parameters from trapframe, this
becauses some syscalls using set_mcontext can sneakily change
parameters and later when those syscalls references parameters,
they will wrongly use register values in mcontext_t.

PR:		72998
MFC after:	3 days

END