Cast first arg in all calls to bzero to char *.

(decl_ultimate_origin): Return NULL if equal to decl.
(constant_size): Never return more than 4.
(value_format, case 8): New case.
(dwarf2out_frame_debug): Use HARD_FRAME_POINTER_REGNUM.
(based_loc_descr): Likewise.
(add_bound_info): Delete default case.
Add cases for CONVERT_EXPR and NON_LVALUE_EXPR; treat like NOP_EXPR.
Change NOP_EXPR to to recursive call.
(add_type_attribute): Ignore unnamed subtype of integral or FP.
(gen_subprogram_die): Use reg_loc_descriptor.
(dwarf2out_decl): Ignore nested functions.

From-SVN: r13939