* final.c (final_scan_insn_1): Judge if a jump table is relative or
	absoluted, and if it needs to be relocated.
	* output.h (default_function_rodata_section,
	default_no_function_rodata_section): Add the second argument to the
	declarations.
	* target.def (function_rodata_section): Change the doc and add
	the second argument.
	* doc/tm.texi: Regenerate.
	* varasm.c (default_function_rodata_section): Add the second argument
	to default_function_rodata_section. It indicates the section should be
	read-only or relocated read-only.
	(default_no_function_rodata_section): Add the second argument.
	(function_mergeable_rodata_prefix): Set the second argument to false
	when default_function_rodata_section calls function_rodata_section.
	* config/mips/mips.c (mips_function_rodata_section): Add the second
	arugment and set it to false when it calls function_rodata_section.
	* config/s390/s390.c (targetm.asm_out.function_rodata_section): Set
	the second argument to false.
	* config/s390/s390.md Likewise.