* mn10300-tdep.c (struct mn10300_prologue): Add GDBARCH member.
(check_for_saved): Use it instead of current_gdbarch.
(mn10300_analyze_prologue): Set it.
* value.c (using_struct_return): Add GDBARCH parameter. Use it
instead of current_gdbarch.
* value.h (using_struct_return): Add GDBARCH parameter.
* eval.c (evaluate_subexp_standard): Pass architecture to
using_struct_return.
* infcall.c (call_function_by_hand): Likewise.
* stack.c (return_command): Likewise.
* sparc-tdep.c (sparc32_push_dummy_code): Likewise.
* symtab.c (in_prologue): Add GDBARCH parameter. Use it instead of
current_gdbarch.
* symtab.h (in_prologue): Add GDBARCH parameter.
* infrun.c (handle_inferior_event): Pass architecture to in_prologue.
* eval.c (evaluate_subexp_standard): Use expression architecture
instead of current_gdbarch.
* c-lang.c (evaluate_subexp_c): Use expression architecture and
language instead of current_gdbarch and current_language.
* printcmd.c (do_one_display): Use expression architecture instead
of current_gdbarch.
* infcmd.c (print_return_value): Use architecture of stop_regcache
instead of current_gdbarch.
(print_vector_info, print_float_info): Remove GDBARCH argument,
use frame architecture instead.
(vector_info, float_info): Update calls.
* objc-lang.c (objc_skip_trampoline): Use frame architecture
instead of current_gdbarch.
* parse.c (write_dollar_variable): Use parse architecture instead
of current_gdbarch.
* source.c (line_info): Use objfile architecture instead of
current_gdbarch.
* symtab.c (find_function_start_sal): Use gdbarch instead of
current_gdbarch.
(print_msymbol_info): Use objfile architecture instead of
current_gdbarch.
* valops.c (value_assign): Use frame architecture instead of
current_gdbarch.