x86/blockdsp: move asm code out of dsputil

Also replace INLINE_<opt> with EXTERNAL_<opt> that were wrongly
changed by commit 2b05db4f8102148d013755ac2a7e47f6d79ff7ca

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
x86/hevc_idct: fix movd parameter size in DC_ADD_INIT

Fixes compilation with NASM x86_64

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: fix NASM output format on Win64

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>