* dwarf2asm.c (dw2_asm_output_pcrel): Mark parameters with
	ATTRIBUTE_UNUSED.
	* final.c (final_scan_insn): Add brackets around body of if-stmt.
	* gcc.c (convert_filename): Add static prototype.  Const-ify.
	Wrap variable in macros controlling its use.
	* output.h (sdata_section): Add prototype.

From-SVN: r46757