PA warning fixes:

PA warning fixes:

        * pa.c: Include system.h and toplev.h.  Remove redundant code.
        (call_operand_address): Mark parameter `mode' with ATTRIBUTE_UNUSED.
        (symbolic_operand): Likewise.
        (symbolic_memory_operand): Likewise.
        (pic_label_operand): Likewise.
        (fp_reg_operand): Likewise.
        (pre_cint_operand): Likewise.
        (post_cint_operand): Likewise.
        (ireg_or_int5_operand): Likewise.
        (int5_operand): Likewise.
        (uint5_operand): Likewise.
        (int11_operand): Likewise.
        (uint32_operand): Likewise.
        (ior_operand): Likewise.
        (lhs_lshift_cint_operand): Likewise.
        (pc_or_label_operand): Likewise.
        (legitimize_pic_address): Likewise.
        (hppa_legitimize_address): Likewise for parameter `old'.
        (output_block_move): Likewise for parameter `size_is_constant'.
        (output_function_prologue): Likewise for parameter `size'.
        (output_function_epilogue): Likewise.
        (return_addr_rtx): Likewise for parameter `count'.
        (output_mul_insn): Likewise for parameter `unsignedp'.
        (hppa_builtin_saveregs): Likewise for parameter `arglist'.
        (output_bb): Likewise for parameter `operands'.
        (output_bvb): Likewise.
        (function_label_operand): Likewise for parameter `mode'.
        (plus_xor_ior_operator): Likewise.
        (shadd_operand): Likewise.
        (non_hard_reg_operand): Likewise.
        (eq_neq_comparison_operator): Likewise.
        (movb_comparison_operator): Likewise.
        (pa_combine_instructions): Likewise for parameter `insns'.
        * pa.h: Add prototypes for functions `output_deferred_plabels',
        `override_options', `output_ascii', `output_function_prologue',
        `output_function_epilogue', `print_operand',
        `symbolic_expression_p', `reloc_needed', `compute_frame_size',
        `hppa_address_cost', `and_mask_p', `symbolic_memory_operand',
        `pa_adjust_cost', `pa_adjust_insn_length' and
        `secondary_reload_class'.

From-SVN: r20554