[patch/rfc] Switch to generic_func_frame_chain_valid()

[Andrew Cagney]

> 2002-06-01  Andrew Cagney  <ac131313@redhat.com>
> 
> 	* gdbarch.sh (FRAME_CHAIN_VALID): Set default to
> 	generic_func_frame_chain_valid.
> 	* gdbarch.h, gdbarch.c: Re-generate.
> 	* blockframe.c (generic_func_frame_chain_valid): Only check
> 	PC_IN_CALL_DUMMY when generic dummy frames.  Don't worry about
> 	passing FP to PC_IN_CALL_DUMMY.
> 	Fix PR gdb/360.

I've checked this in.

Can I strongly encourage architecture maintainers to no longer set 
FRAME_CHAIN_VALID and instead just let the architecture vector pick up 
the default.

Andrew