Avoid creating COPY relocs if possible.

	* elf32-i386.c (elf_i386_check_relocs): Tweak condition under
	which .got created.  Mark symbols used by R_386_32 and R_386_PC32
	relocs as ELF_LINK_NON_GOT_REF to create COPY relocs only when the
	reloc is in a read-only section.  Instead, allocate space for a
	dynamic reloc to reference the library symbol directly.  Keep
	track of space we allocate using pcrel_relocs_copied.
	(discard_copies): Delete, and move code to ..
	(allocate_plt_and_got): ..here.  Rename to
	allocate_plt_and_got_and_discard_relocs.  Remove unneeded dynamic
	relocs for non-shared link.
	(elf_i386_size_dynamic_sections): Update calls to above functions.
	(elf_i386_relocate_section): Write out the dynamic relocs.  Add
	more ugly logic to avoid "unresolvable relocation" error.  Use
	htab shortcut in place of elf_hash_table macro.
	(elf_i386_finish_dynamic_sections): Allow that dynamic .got may
	not always be created now.

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