Hello,

Hello,  this another long overdue step towards getting the frame cache 
under better control.  It introduces the accesor method:
	get_selected_frame()
and then deprecates the old global `selected_frame'.

Breaking down the uses of `selected_frame':

*-tdep.c: These are eliminated  byupdating the code to current 
interfaces.  Targets like the i386 and rs6000, for instance, don't refer 
to selected_frame.

varobj.c, breakpoints.c, ada-lang.c:  These are all pulling the switch 
selected frame hack (the thing that needs to go).  Eliminating these 
will take a bit of time.  Stopping these cases breading is the principle 
motivation behind clearly marking selected_frame as deprecated.

stack.c:  This, since it implements things like up/down and info frame, 
has legetimate references to selected_frame.  They can be changed to 
get_selected_frame().

I'll look to committing this one in a few days,
Andrew