Don't make _DYNAMIC/_GLOBAL_OFFSET_TABLE_ absolute

Don't make _DYNAMIC/_GLOBAL_OFFSET_TABLE_ absolute

bfd/

	* elf32-i386.c (elf_i386_finish_dynamic_symbol): Don't make
	_DYNAMIC nor _GLOBAL_OFFSET_TABLE_ absolute.
	* elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Likewise.

ld/testsuite/

	* ld-i386/tlsdesc-nacl.rd: Update for dynamic sym changes.
	* ld-i386/tlsdesc.rd: Likewise.
	* ld-i386/tlsgdesc-nacl.rd: Likewise.
	* ld-i386/tlsgdesc.rd: Likewise.
	* ld-i386/tlsnopic-nacl.rd: Likewise.
	* ld-i386/tlsnopic.rd: Likewise.
	* ld-i386/tlspic-nacl.rd: Likewise.
	* ld-i386/tlspic.rd: Likewise.
	* ld-x86-64/tlsdesc-nacl.rd: Likewise.
	* ld-x86-64/tlsdesc.rd: Likewise.
	* ld-x86-64/tlsgdesc-nacl.rd: Likewise.
	* ld-x86-64/tlsgdesc.rd: Likewise.
	* ld-x86-64/tlspic-nacl.rd: Likewise.
	* ld-x86-64/tlspic.rd: Likewise.