1999-06-26  Michael Natterer  <mitschel@cs.tu-berlin.de>

	* app/[all tool related files]
	* app/commands.c
	* app/disp_callbacks.c
	* app/gdisplay.c
	* app/gimage.c
	* app/interface.c: hopefully fixed the bugs that appeared with my
	last fix. And some more changes...

	- Slightly changed the conditions which cause the tools to be
	  re-initialized on button_press events and the global
	  initialisation functions.
	- The dialog tools now explicitly set tool->gdisp_ptr so they can
	  be properly hidden on display deletion.
	- Create the crop info dialog only once and avoid ugly redraw bugs
	  by blocking the sizeentries' signal when initializing them.
	- Standardized the tools_new_<tool>() functions. They are
	  scheduled to be moved to a common constructor in tools.c
	- Various stuff...