devel/exomizer: Update to 3.1.2

Changes:

• Change to zlib license for all files not contributed by others.
• The logic in the sfx decruncher should also check if the setup copy area accesses RAM below ROM when deciding ram_during. Bug reported by Comos.
• The desfx sub command should only consider mem areas created after setup for detection of the decrunched data. Bug reported by Gi-Joe.
• Make c65 sfx target disable IRQ:s on exit in more situations.
• Fix Atari 8bit sfx zero page addr collision.
• Improve zp-usage and fix sfx basic for target PET 4032.
• The exodecr/exodecrunch.s 6502 decruncher now also exists in a version for kick assembler.

Reported by: portscout

(cherry picked from commit d48dece4e53b48d5412de2d8687d740defb51f1b)