filelist_view: code format
Merge pull request #71 from nongxiaoming/master

add RTGUI_EVENT_GESTURE to rtgui_app_event_handler to send to window.
Merge remote-tracking branch 'origin/master'
topwin: optimize _rtgui_topwin_move_whole_tree2top
topwin: only draw the whole tree if the tree is actrually moved