*fixed cursor position bug when pasting/extending text into second line

*fixed cord redrawing when objects got resized due to cut/paste of object's text
*ctrlleft,ctrlright, and shift variants all now properly navigate messages during editing, including single character atoms
*fixed regression where clicking on iemgui labels of gop-embedded iemgui objects also counts as a click on the object itself (e.g. toggle being toggled on/off)
*fixed regression when dynamically changing iemgui properties within gop as to when to hide and when to show it
*proper redrawing and reordering logic for arrange and dynamic changes to iemgui objects inside gop
*committed http://sourceforge.net/p/pure-data/pure-data/ci/97851b3c44b2b3839069928d90ca6185de4455c5/