more debug

Rev: src/constants.c:1.17
Rev: src/constants.h:1.9
Rev: src/docode.c:1.46
Rev: src/dynamic_load.c:1.35
Rev: src/interpret.c:1.120
Rev: src/modules/Image/encodings/_xpm.c:1.5
Rev: src/modules/Image/encodings/pcx.c:1.5
Rev: src/modules/Image/encodings/tga.c:1.5
Rev: src/modules/Image/encodings/xbm.c:1.3
Rev: src/modules/Image/encodings/xcf.c:1.7
Rev: src/opcodes.c:1.37