Fixed various warnings and potential bugs with types of different sizes. Rev: src/encode.c:1.197 Rev: src/gc.c:1.232 Rev: src/modules/DVB/dvb.c:1.21 Rev: src/modules/Gz/zlibmod.c:1.65 Rev: src/modules/Image/colors.c:1.66 Rev: src/modules/Image/font.c:1.81 Rev: src/modules/Mysql/dummy.c:1.13 Rev: src/modules/Parser/html.c:1.167 Rev: src/modules/Postgres/postgres.c:1.32 Rev: src/modules/_Image_GIF/image_gif.c:1.16 Rev: src/modules/_Image_JPEG/image_jpeg.c:1.63 Rev: src/modules/system/system.c:1.155 Rev: src/post_modules/GTK/pgtk.h:1.31 Rev: src/post_modules/GTK/source/global.pre:1.31 Rev: src/post_modules/GTK/source/gnomeiconselection.pre:1.3 Rev: src/post_modules/GTK/source/gtkclist.pre:1.15 Rev: src/post_modules/GTK/source/support.c:1.37 Rev: src/post_modules/SDL/SDL.cmod:1.20 Rev: src/post_modules/Shuffler/e_source_block_pikestream.c:1.3 Rev: src/program.c:1.525