jpeg2000dec: Use correct printf length modifier for pointer differences

Also eliminate an unnecessary cast. Fixes the following warning:
jpeg2000dec.c:1200:20: warning: format ‘%lX’ expects argument of type ‘long unsigned int’, but argument 5 has type ‘long long unsigned int’
mmf: Write metadata into an Optional Data chunk

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
fate: update the mmf reference

Using Optional Data chunk introduced changes the hash.
dynamic loading of shared faac library
no Werror on implicit-function-declaration and missing-prototypes
custom icon and windows resource
use upstream version tag, my repo is always rebased