update AdditionalIncludeDirectories to use SDL2
update AdditionalDependencies to use SDL2
add AdditionalLibraryDirectory to SDL2 libs
set sub-system as console
This patch moves cg_particles.c out of cg_marks.c to the actual file that was
already there but not used. By default WOLF_PARTICLES definition is commented
out if someone wants to use the old cg_particles.c changes. cg_particles.c has
been added to the makefile and msvc projects.