Rock Dodgers

looks like gcc has become more compliant with C since this project was
active.

main.c:209 declares the struct greeble greeb[MAX_GREEBLES] right before
declaring what the struct is.

just move it down to after the greeble struct def, and it will compile on a
modern system ( just got it going on fedora 10 - yum install SDL*-devel,
make, ./rockdodgers )