disasm: collapse all the segment register push/pop bytecodes
disasm: collapse all the segment register push/pop bytecodes

As far as the disassembler is concerned, the segment register push/pop
bytecodes can be collapsed to a simple expression; the remaining
differences are handled by the filter expressions in insns.pl.

Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@zytor.com>

projedi/nasm,projedi/nasm,projedi/nasm,techkey/nasm,Distrotech/nasm,letolabs/nasm,Distrotech/nasm,turingstudio/nasm,projedi/nasm,Distrotech/nasm,letolabs/nasm,techkey/nasm,techkey/nasm,projedi/nasm,turingstudio/nasm,techkey/nasm,techkey/nasm,turingstudio/nasm,turingstudio/nasm,letolabs/nasm,Distrotech/nasm