the Mach/i386 version of the BSD/vax(?) <machine/psl.h>. The Mach version has slightly better names for many macros but is now out of date and little used. It was originally used even less (for spelling PSL_T as EFL_TF in <machine/db_machdep.h>).
headers into a related source file. Added cons.h as first step towards moving i386/i386/cons.h to machine/cons.h where it belongs.
minor cleanup. Added $Id$ to files that did not have any version info, etc