* cursors/{mouse1_u,mouse1_umsk}: new mouse cursor for intersection
operations.
* app/cursorutil.[ch], app/rect_select.c: use the new cursor.
* app/gimpimage.c: Applied layer removal bug fix from
David Le Corfec, <lecorfec@etudiant.univ-mlv.fr>
* plug-ins/gdyntext/{font_selection.c, gdyntext.c, gdyntext_ui.c}:
replaced snprintf with g_snprintf.
* plug-ins/jpeg/jpeg.c: updated to work with the double precision
resolutions.