reorg common COPY logic for 16BPP, it was duplicated in two places likely due to gcc bugs but that is no longer needed, update generated ASM
replace COMPILE_ARM_ASM with USE_INLINE_ARM_ASM in maxvid_decode.c so that it is possible to compile the code for ARM bu
t without the inline ASM code, add -Qunused-arguments -mno-thumb to module flags
implement 64bit alignment for big DUP operations in both the 16BPP and 32BPP code, update ARM asm