vax: clean up the comments a bit

also remove extraneous whitespace
vax: optimize with fancy addressing modes
vax: more size optimization

move syscall routine to %ap and call to register rather than label
vax: more optimization

use simpler counter in lzss code
vax: vax is little endian

not sure why that was wrong before
vax: vax is little endian
vax: more optimizing

displacement sizing
vax: size opt

use clear instead of move $0 on stack
vax: use discrete instructions for strcat and find_string

the fancy CISC instructions end up being bigger
vax: optimize center_and_print and write_stdout

various small things.  de-CISC, b` displacement, etc.
vax: missing %r
vax: update final size