darwin.h: Don't include darwin-sections.def to declare global variables...

darwin.h: Don't include darwin-sections.def to declare global variables...

	* config/darwin.h: Don't include darwin-sections.def to declare
	global variables; instead create darwin_section_enum.
	(darwin_section_enum): New.
	(darwin_sections): New.
	* config/darwin.c: Don't include darwin-sections.def to define
	global variables.
	(darwin_sections): New.
	(output_objc_section_asm_op): Rewrite to take advantage of
	darwin_sections.
	(darwin_init_sections): Rewrite to use darwin_sections.
	(machopic_output_indirection): Update for darwin_sections array.
	(machopic_select_section): Likewise.
	(machopic_select_rtx_section): Likewise.
	(machopic_asm_out_constructor): Likewise.
	(machopic_asm_out_destructor): Likewise.
	(darwin_file_end): Likewise.
	* config/rs6000/rs6000.c (machopic_output_stub): Likewise.
	* config/i386/i386.c (machopic_output_stub): Likewise.

From-SVN: r108765