grim/guifications2

9bb103ce6002
This should adjust the context menu to fit within the screen (and thus display
properly). In testing, I discovered that the context menu doesn't display
correctly for me either with or without this, so near as I can tell it doesn't
break anything. Fixes #396.
src/gf_action.c
src/gf_blist.c
src/gf_display.c
src/gf_event.c
src/gf_event_info.c
src/gf_item.c
src/gf_item_icon.c
src/gf_item_image.c
src/gf_item_offset.c
src/gf_item_text.c
src/gf_menu.c
src/gf_notification.c
src/gf_preferences.c
src/gf_stock.c
src/gf_theme.c
src/gf_theme_editor.c
src/gf_theme_info.c
src/gf_theme_ops.c
src/guifications.c