Cleanup: fix names of recipe and patch files.

* this fixes the wrong recipe names introduced by myself in #d525fee
* adjust patch names to match corresponding recipes
* additionally: create 'additional-files' folders as hint to some
  ports that do not have a proper recipe yet

media-libs/sdl_sound/sdl_sound-1.0.3.recipe

@@ -0,0 +1,26 @@
+DESCRIPTION="sdl-sound" 
+HOMEPAGE="http://www.icculus.org/SDL_sound" 
+SRC_URI="hg+http://hg.icculus.org/icculus/SDL_sound#release-1.0.3"
+REVISION="1"
+STATUS_HAIKU="stable"
+DEPEND="media-libs/libogg >= 1.1.4"
+BUILD()
+{
+	cd sdl-sound-1.0.3
+	libtoolize --copy --force --install
+	./bootstrap
+	MANDIR=`finddir B_COMMON_DOCUMENTATION_DIRECTORY`/man
+	LIBDIR=`finddir B_COMMON_LIB_DIRECTORY`
+	./configure --prefix=`finddir B_COMMON_DIRECTORY` \
+		--libdir=$LIBDIR \
+		--mandir=$MANDIR
+	make
+}
+
+INSTALL()
+{
+	cd sdl-sound-1.0.3
+	make install
+}
+LICENSE="GNU LGPL v2.1"
+COPYRIGHT="2001-2009 Ryan C. Gordon"