smartalign: clean up unnecessary duplication; tweak dependencies
smartalign: clean up unnecessary duplication; tweak dependencies

Remove unnecessary duplicated patterns; with indirection we can handle
lists of any length.

For 16-bit generic padding, alternate between SI and DI dependencies.

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

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