* symtab.h: Rename SYMBOL_OPS to SYMBOL_COMPUTED_OPS.

	* symtab.h: Rename SYMBOL_OPS to SYMBOL_COMPUTED_OPS.
	* ax-gdb.c (gen_var_ref): Likewise.
	* findvar.c (read_var_value, symbol_read_needs_frame): Likewise.
	* printcmd.c (address_info): Likewise.
	* dwarf2loc.c (dwarf_expr_frame_base): Likewise.
	* dwarf2read.c (dwarf2_symbol_mark_computed): Likewise.
	* symtab.h: Rename struct symbol_ops to struct symbol_computed_ops.
	* dwarf2loc.h: Likewise.
	* dwarf2loc.c (dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Likewise.

	* symtab.h: (struct symbol_register_ops): New struct definition.
	(struct symbol): Make "ops" member a union of symbol_computed_ops and
	symbol_register_ops callback pointers.
	(SYMBOL_REGISTER_OPS): New macro.
	* tracepoint.c: Include "objfiles.h".
	(scope_info, collect_symbol): Use SYMBOL_REGISTER_OPS register_number
	callback to retrieve register numbers.
	* ax-gdb.c (gen_var_ref): Likewise.
	* findvar.c (read_var_value): Likewise.
	* printcmd.c (address_info): Likewise.

	* coffread.c (coff_reg_to_regnum): New function.
	(coff_register_funcs): New static variable.
	(process_coff_symbol): Do not call gdbarch_sdb_reg_to_regnum.
	Install SYMBOL_REGISTER_OPS callbacks.
	* mdebugread.c (mdebug_reg_to_regnum): New function.
	(mdebug_register_funcs): New static variable.
	(parse_symbol): Do not call gdbarch_ecoff_reg_to_regnum.
	Install SYMBOL_REGISTER_OPS callbacks.
	* stabsread.c (stab_reg_to_regnum): New function.
	(stab_register_funcs): New static variable.
	(define_symbol): Do not call gdbarch_stab_reg_to_regnum.
	Install SYMBOL_REGISTER_OPS callbacks.