Pass argc and argv to the main function of the SDL tests.

This appears to be required on Windows and does no harm on Linux.
closes issue 344, patch by jdm

Originally committed as revision 11662 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -493,7 +493,7 @@ check_func2(){
     done
     check_ld "$@" <<EOF && enable $func
 $incs
-int main(void){
+int main(int argc, char **argv){
     (void) $func;
     return 0;
 }
@@ -1706,7 +1706,7 @@ if "${SDL_CONFIG}" --version >/dev/null 2>&1; then
             enable sdl
             check_cc $sdl_cflags <<EOF && enable sdl_video_size
 #include <SDL.h>
-int main(void){
+int main(int argc, char **argv){
     const SDL_VideoInfo *vi = SDL_GetVideoInfo();
     int w = vi->current_w;
     return 0;