c64 .PRG loader

emulate 6502 to let the autoload picture load itself !
supports multicolor, hires and some C64 FLI .PRGs

src/Makefile

@@ -812,14 +812,14 @@ OBJS = main.o init.o graph.o $(APIOBJ) misc.o special.o \
        fileformats.o miscfileformats.o libraw2crtc.o \
        brush_ops.o buttons_effects.o layers.o \
        oldies.o tiles.o colorred.o unicode.o gfx2surface.o \
-       gfx2log.o gfx2mem.o tifformat.o
+       gfx2log.o gfx2mem.o tifformat.o c64load.o 6502.o
 ifndef NORECOIL
 OBJS += loadrecoil.o recoil.o
 endif
 
 TESTSOBJS = $(patsubst %.c,%.o,$(wildcard tests/*.c)) \
             miscfileformats.o fileformats.o oldies.o libraw2crtc.o \
-            loadsavefuncs.o packbits.o tifformat.o \
+            loadsavefuncs.o packbits.o tifformat.o c64load.o 6502.o \
             op_c.o colorred.o \
             unicode.o \
             io.o realpath.o version.o pversion.o \