Added elm_scroller_page_snap_set/get.
Added elm_scroller_page_scroll_limit_set/get.
Added Elm_Scroller_Movement_Block.
Added elm_scroller_movement_block_set/get.
Added example scroller_example_01.
Finished Elm_scroller.
Added the begining of genlist_example_04.
Added items in genlist_example04.
Added evas_object_box_layout_flow_horizontal.
Finished genlist_example_04.