First commit to make "Style" settings saved in startup.blend

Usage currently is limited to:
- Panel text, widget text and label text style:
  point size, shadow effects

Setting individual fonts to these is not possible yet, it uses the
default for it.

Access goes via outliner now; check "User Preferences". UI team could
add this in userpref scripts :)

source/blender/blenloader/intern/readfile.c

@@ -11757,7 +11757,8 @@ static BHead *read_userdef(BlendFileData *bfd, FileData *fd, BHead *bhead)
 
 	// XXX
 	user->uifonts.first= user->uifonts.last= NULL;
-	user->uistyles.first= user->uistyles.last= NULL;
+	
+	link_list(fd, &user->uistyles);
 
 	/* free fd->datamap again */
 	oldnewmap_free_unused(fd->datamap);

source/blender/blenloader/intern/writefile.c

@@ -723,7 +723,8 @@ static void write_userdef(WriteData *wd)
 	wmKeyMap *keymap;
 	wmKeyMapItem *kmi;
 	bAddon *bext;
-
+	uiStyle *style;
+	
 	writestruct(wd, USER, "UserDef", 1, &U);
 
 	for(btheme= U.themes.first; btheme; btheme=btheme->next)
@@ -742,6 +743,10 @@ static void write_userdef(WriteData *wd)
 
 	for(bext= U.addons.first; bext; bext=bext->next)
 		writestruct(wd, DATA, "bAddon", 1, bext);
+	
+	for(style= U.uistyles.first; style; style= style->next) {
+		writestruct(wd, DATA, "uiStyle", 1, style);
+	}
 }
 
 static void write_boid_state(WriteData *wd, BoidState *state)