Better handling of 32-bit imms in 64-bit moves
Better handling of 32-bit imms in 64-bit moves

A much better way to handle the 32-bit immediates in 64-bit moves.
Add a test file.

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