Contribs: add SDL

contrib/src/sdl/SHA512SUMS

+61ab65661492038d319b83521a27dc80dc71c76b63965ec094c9f53fbb76466e612d119297f9797d62147a0641808136181d0926e8082cb9b3e8d2a8e688a8b2  SDL-1.2.14.tar.gz

contrib/src/sdl/rules.mak

+# SDL
+
+SDL_VERSION := 1.2.14
+SDL_URL := http://www.libsdl.org/release/SDL-$(SDL_VERSION).tar.gz
+
+PKGS += sdl
+ifeq ($(call need_pkg,"sdl"),)
+PKGS_FOUND += sdl
+endif
+
+$(TARBALLS)/SDL-$(SDL_VERSION).tar.gz:
+	$(call download,$(SDL_URL))
+
+.sum-sdl: SDL-$(SDL_VERSION).tar.gz
+
+sdl: SDL-$(SDL_VERSION).tar.gz .sum-sdl
+	$(UNPACK)
+	$(MOVE)
+
+SDLCONF := $(HOSTCONF) \
+	--disable-video-x11 \
+	--disable-video-aalib \
+	--disable-video-dga \
+	--disable-video-fbcon \
+	--disable-video-directfb \
+	--disable-video-ggi \
+	--disable-video-svga \
+	--disable-directx \
+	--disable-joystick \
+	--disable-cdrom \
+	--disable-threads \
+	--disable-sdl-dlopen
+
+.sdl: sdl
+	cd $< && $(HOSTVARS) ./configure $(SDLCONF)
+	cd $< && $(MAKE) install
+	touch $@