Kexi: Change -D definitions to cmake options in config-kexi.h, remove subforms
Also improve macro names, and change from opt-out to opt-in:
- KEXI_FORM_CURSOR_PROPERTY_SUPPORT
- KEXI_SHOW_CONTEXT_HELP
- KEXI_QUICK_PRINTING_SUPPORT
- KEXI_AUTOFIELD_FORM_WIDGET_SUPPORT
- KEXI_LIST_FORM_WIDGET_SUPPORT
- KEXI_PIXMAP_COLLECTIONS_SUPPORT
