Fix middle button pasting in the TextView (#81880, reported by Evert

Fix middle button pasting in the TextView (#81880, reported by Evert

Sat Mar 13 02:55:51 2004  Matthias Clasen  <maclas@gmx.de>

	Fix middle button pasting in the TextView  (#81880, reported
	by Evert Verhellen, patch by Paolo Borelli):

	* gtk/gtktextview.c (gtk_text_view_button_press_event): Retrieve
	the insert mark and move the cursor to it making sure of also
	scroll the window if needed.

	* gtk/gtktextbuffer.c (pre_paste_prep): Move the insert mark
	to the insertion point.