i386: Force symbol dynamic if it isn't undefined weak

i386: Force symbol dynamic if it isn't undefined weak

Force symbol dynamic if it isn't undefined weak.  Generate R_386_RELATIVE
relocation for R_386_GOT32 relocation against non-dynamic symbol in PIC.

	PR ld/21402
	* elf32-i386.c (elf_i386_allocate_dynrelocs): If a symbol isn't
	undefined weak symbol, don't make it dynamic.
	(elf_i386_relocate_section): If a symbol isn't dynamic in PIC,
	set no_finish_dynamic_symbol and generate R_386_RELATIVE
	relocation for R_386_GOT32.