Log Message:
Changes 2.7.5:
	* Support for scrolling with mouse wheel button
	* Support for neXtaw widgets
	* Bug fixes (randomly occurring segfault fixed -
	  nargs = 0 not properly reinitialized in menu bar routine !)

Changes 2.7.4:
	* All popup windows now behave properly under resize requests.
	  This corrects former (extremely buggy) behaviour.
	* Segfault bug in Print popup corrected
	* The transparency activation/disactivation of selected regions
	  under mouse clicks has been substantially improved.
	* Xaw95 widgets have been removed from the source tree, and
	  Xaw3d is now the recommended widget set.