smartalign: adjust the alignment threshold
smartalign: adjust the alignment threshold

Apparently the current recommendation is for a smaller threshold when
using the "generic"-style alignment macros (short jumps are cheaper on
newer CPUs.)

Also change the alignment threshold definition to reflect the maximum
number of padding instead of when to start using jumps.

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