[fyi] CONTRIBUTE mention gdbarch.sh

[Andrew Cagney]

Just FYI,

I've added the following to the CONTRIBUTE file.

	Andrew
2001-02-23  Andrew Cagney  <ac131313@redhat.com>

	* CONTRIBUTE: Mention that patches do not need to include the
	generated files gdbarch.h and gdbarch.c.
	
	
*** CONTRIBUTE	2000/03/01 08:33:47	1.2
--- CONTRIBUTE	2001/02/23 22:06:05
*************** o	If ``gdb/configure.in'' is modified th
*** 151,153 ****
--- 151,160 ----
  
  	The maintainer will re-generate those files
  	using autoconf (2.13 as of 2000-02-29).
+ 
+ 
+ o	If ``gdb/gdbarch.sh'' is modified, you don't
+ 	need to include patches to the generated files
+ 	``gdbarch.h'' and ``gdbarch.c''.
+ 
+ 	See ``gdb/configure.in'' above.