* gdbtypes.c (create_string_type): Receive character type as argument.

	* gdbtypes.h (create_string_type): Add character type argument.
        * dwarf2read.c (read_tag_string_type): Pass character type to
	create_string_type.

	* value.h (value_string): Add character type argument.
	* valops.c (value_string): Add character type argument.  Pass it to
	create_string_type.  Do not allocate space in inferior.
	* valarith.c (value_concat): Pass character type to value_string.

	* value.h (value_typed_string): Rename to ...
	(value_cstring): ... this.
	* valops.c (value_typed_string): Rename to ...
	(value_cstring): ... this.
	* c-lang.c (evaluate_subexp_c): Update.

	* python/python-value.c (builtin_type_pychar): New define.
	(convert_value_from_python): Call value_cstring instead
	of value_from_string.
	* value.c (value_from_string): Remove.
	* value.h (value_from_string): Remove.

	* eval.c (evaluate_subexp_standard): Pass character type to
	value_string.  Pass expression architecture to value_nsstring
	and lookup_child_selector.
	* objc-lang.h (lookup_objc_class): Add GDBARCH parameter.
	(lookup_child_selector): Likewise.
	(value_nsstring): Likewise.
	* objc-lang.c (lookup_objc_class): Add GDBARCH parameter.
	Pass character type to value_string..
	(lookup_child_selector): Likewise.
	(value_nsstring): Add GDBARCH parameter, use it instead of
	objfile architecture.  Pass architecture to lookup_objc_class
	and lookup_child_selector. Pass character type to value_string.
	(end_msglist): Pass architecture to lookup_objc_class.
	* objc-exp.y: Pass architecture to lookup_objc_class.