* elf-hppa.h (elf_hppa_final_link): Use gp val of zero when none

	* elf-hppa.h (elf_hppa_final_link): Use gp val of zero when none
	of the usual sections are found.
	* elf-m10300.c (_bfd_mn10300_elf_size_dynamic_sections): Tidy.
	Strip .dynbss if it is zero size.
	* elf32-arm.c (elf32_arm_size_dynamic_sections): Likewise.
	* elf32-cris.c (elf_cris_size_dynamic_sections): Likewise.
	* elf32-hppa.c (elf32_hppa_size_dynamic_sections): Likewise.
	* elf32-i370.c (i370_elf_size_dynamic_sections): Likewise, and
	.dynsbss.
	(i370_elf_finish_dynamic_sections): Don't attempt to write .got
	when it is zero size.
	* elf32-i386.c (elf_i386_size_dynamic_sections): Correct handling
	of .dynbss and zero size sections.
	* elf32-m32r.c (m32r_elf_size_dynamic_sections): Strip .dynbss if
	it is zero size.
	* elf32-m68k.c (elf_m68k_size_dynamic_sections): Tidy.  Strip
	.dynbss if zero size.
	* elf32-ppc.c (ppc_elf_size_dynamic_sections): Likewise, .dynsbss
	too.
	* elf32-s390.c (elf_s390_size_dynamic_sections): Likewise.
	* elf32-sh.c (sh_elf_size_dynamic_sections): Likewise.
	* elf32-vax.c (elf_vax_size_dynamic_sections): Likewise.
	* elf32-xtensa.c (elf_xtensa_size_dynamic_sections): Tidy.  Strip
	.plt.* and .got.plt.* if zero size.
	* elf64-alpha.c (elf64_alpha_size_dynamic_sections): Tidy.  Strip
	.got* and .dynbss if zero size.
	* elf64-hppa.c (elf64_hppa_size_dynamic_sections): Tidy.  Strip
	* elf64-ppc.c (create_linkage_sections): Create branch lookup table
	in .data.rel.ro.brlt or .rodata.brlt, and similarly for associated
	reloc section.
	(create_got_section): Always create new .got and .rela.got sections.
	(ppc64_elf_size_dynamic_sections): Tidy.  Strip .dynbss if zero size.
	* elf64-s390.c (elf_s390_size_dynamic_sections): Likewise.
	* elf64-sh64.c (sh64_elf64_size_dynamic_sections): Likewise.
	* elf64-x86-64.c (elf64_x86_64_size_dynamic_sections): Handle
	dynamic bss sections correctly.
	* elfxx-mips.c (_bfd_mips_elf_size_dynamic_sections): Tidy.
	* elfxx-sparc.c (_bfd_sparc_elf_size_dynamic_sections): Tidy.  Strip
	.dynbss if zero size.