Come up with OPTION_SET_P macro.

Come up with OPTION_SET_P macro.

gcc/ada/ChangeLog:

	* gcc-interface/misc.c (gnat_post_options): Use new macro
	OPTION_SET_P.
	(gnat_init_gcc_eh): Likewise.
	(gnat_init_gcc_fp): Likewise.

gcc/c-family/ChangeLog:

	* c-opts.c (c_common_post_options): Use new macro
	OPTION_SET_P.

gcc/ChangeLog:

	* config/alpha/alpha.c (alpha_option_override): Use new macro
	OPTION_SET_P.
	* config/arc/arc.c (arc_override_options): Likewise.
	* config/arm/arm.c (arm_option_override): Likewise.
	* config/bfin/bfin.c (bfin_load_pic_reg): Likewise.
	* config/c6x/c6x.c (c6x_option_override): Likewise.
	* config/csky/csky.c: Likewise.
	* config/darwin.c (darwin_override_options): Likewise.
	* config/frv/frv.c (frv_option_override): Likewise.
	* config/i386/djgpp.h: Likewise.
	* config/i386/i386.c (ix86_stack_protect_guard): Likewise.
	(ix86_max_noce_ifcvt_seq_cost): Likewise.
	* config/ia64/ia64.c (ia64_option_override): Likewise.
	(ia64_override_options_after_change): Likewise.
	* config/m32c/m32c.c (m32c_option_override): Likewise.
	* config/m32r/m32r.c (m32r_init): Likewise.
	* config/m68k/m68k.c (m68k_option_override): Likewise.
	* config/microblaze/microblaze.c (microblaze_option_override): Likewise.
	* config/mips/mips.c (mips_option_override): Likewise.
	* config/nios2/nios2.c (nios2_option_override): Likewise.
	* config/nvptx/nvptx.c (nvptx_option_override): Likewise.
	* config/pa/pa.c (pa_option_override): Likewise.
	* config/riscv/riscv.c (riscv_option_override): Likewise.
	* config/rs6000/aix71.h: Likewise.
	* config/rs6000/aix72.h: Likewise.
	* config/rs6000/aix73.h: Likewise.
	* config/rs6000/rs6000.c (darwin_rs6000_override_options): Likewise.
	(rs6000_override_options_after_change): Likewise.
	(rs6000_linux64_override_options): Likewise.
	(glibc_supports_ieee_128bit): Likewise.
	(rs6000_option_override_internal): Likewise.
	(rs6000_file_start): Likewise.
	(rs6000_darwin_file_start): Likewise.
	* config/rs6000/rtems.h: Likewise.
	* config/rs6000/sysv4.h: Likewise.
	* config/rs6000/vxworks.h (SUB3TARGET_OVERRIDE_OPTIONS): Likewise.
	* config/s390/s390.c (s390_option_override): Likewise.
	* config/sh/linux.h: Likewise.
	* config/sh/netbsd-elf.h (while): Likewise.
	* config/sh/sh.c (sh_option_override): Likewise.
	* config/sol2.c (solaris_override_options): Likewise.
	* config/sparc/sparc.c (sparc_option_override): Likewise.
	* config/tilegx/tilegx.c (tilegx_option_override): Likewise.
	* config/visium/visium.c (visium_option_override): Likewise.
	* config/vxworks.c (vxworks_override_options): Likewise.
	* lto-opts.c (lto_write_options): Likewise.
	* omp-expand.c (expand_omp_simd): Likewise.
	* omp-general.c (omp_max_vf): Likewise.
	* omp-offload.c (oacc_xform_loop): Likewise.
	* opts.h (OPTION_SET_P): Likewise.
	* targhooks.c (default_max_noce_ifcvt_seq_cost): Likewise.
	* toplev.c (process_options): Likewise.
	* tree-predcom.c: Likewise.
	* tree-sra.c (analyze_all_variable_accesses): Likewise.

gcc/cp/ChangeLog:

	* constexpr.c (maybe_warn_about_constant_value): Use new macro
	OPTION_SET_P.
	* decl.c (redeclaration_error_message): Likewise.
	(cxx_init_decl_processing): Likewise.

gcc/d/ChangeLog:

	* d-lang.cc (d_post_options): Use new macro
	OPTION_SET_P.

gcc/fortran/ChangeLog:

	* options.c (gfc_post_options): Use new macro
	OPTION_SET_P.

gcc/objc/ChangeLog:

	* objc-next-runtime-abi-01.c: Use new macro
	OPTION_SET_P.
	* objc-next-runtime-abi-02.c (objc_next_runtime_abi_02_init): Likewise.