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

gnome-base/gnome_common/gnome_common-2.28.recipe

@@ -0,0 +1,22 @@
+DESCRIPTION="A module that is required only when building GNOME from the repository"
+HOMEPAGE="http://git.gnome.org/browse/gnome-common/"
+SRC_URI="git+git://git.gnome.org/gnome-common"
+REVISION="1"
+STATUS_HAIKU="stable"
+DEPEND=""
+BUILD()
+{
+        cd gnome-common-2.28
+		./autogen.sh
+        ./configure --prefix=`finddir B_COMMON_DIRECTORY`
+        make
+}
+	
+INSTALL()
+{
+        cd gnome-common-2.28
+        make install
+}
+
+LICENSE="GNU GPL v3"
+COPYRIGHT="1999-2010 Martin Baulig"