Fix several mix up between octets and bytes in ELF program headers

Fixes additional locations not handled in the first patch.

When converting between addresses in ELF headers [octets] and bfd
LMA/VMA [bytes], the number of octets per byte needs to be incorporated.

include/
	* bfdlink.h (struct bfd_link_order): Add unit (bytes/octets) to
	offset and size members.
	* elf/internal.h (struct elf_internal_phdr): Likewise for
	p_align member.
	(struct elf_segment_map): Likewise for p_paddr and p_size
	members
bfd/
	* bfd.c (bfd_record_phdr): New local "opb".  Fix assignment of
	"p_paddr" from "at".
	* elfcode.h (bfd_from_remote_memory): Add units to several
	parameters.  New local "opb".  Fix usage of p_align.  Fix
	calculation of "localbase" from "ehdr_vma" and "p_vaddr".  Fix
	call of target_read_memory.
	* elflink.c (elf_fixup_link_order): Fix scope of "s" local.  Fix
	calculation of "offset" and "output_offset".
	(bfd_elf_final_link): New local "opb".  Fix calculation of "size"
	from "offset" and fix calculation of "end" from "vma+size".  Fix
	comparison between "sh_addr" and "vma"/"output_offset".
	(bfd_elf_discard_info): Fix calculation of "eh_alignment".
	* elf-bfd.h (struct elf_link_hash_table): Add unit to tls_size
	member.
	* elf.c (_bfd_elf_map_sections_to_segments): Add unit (bytes/
	octets) to "wrap_to2 and "phdr_size" locals.  Fix calculation of
	"wrap_to" value.  Add unit (bytes) to phdr_lma variable.  Fix
	assignment of p_paddr from phdr_lma.  Fix comparison between
	"lma+size" and "next->lma".
	(elf_sort_segments): Fix assignment from p_paddr to lma.
	(assign_file_positions_for_load_sections): Add unit (bytes) to
	local "align".  Fix calculation of local "off_adjust".  Fix
	calculation of local "filehdr_vaddr".
	(assign_file_positions_for_non_load_sections): New local "opb".
	Fix calculation of "end" from "p_size". Fix comparison between
	"vma+SECTION_SIZE" and "start".  Fix calculation of "p_memsz"
	from "end" and "p_vaddr".
	(rewrite_elf_program_header): Fix comparison between p_vaddr and
	vma.  Fix assignment to p_paddr from lma.  Fix comparison between
	p_paddr and lma.  Fix assignment to p_paddr from lma.
	* merge.c (sec_merge_emit): New local "opb". Convert
	"alignment_power" to octets.
	(_bfd_add_merge_section): New locals "alignment_power" and
	"opb".  Fix comparison between "alignment_power" and
	"sizeof(align)".
	(_bfd_merge_sections): New local "opb".  Divide size by opb
	before checking align mask.

include/bfdlink.h

@@ -801,9 +801,9 @@ struct bfd_link_order
   struct bfd_link_order *next;
   /* Type of link_order.  */
   enum bfd_link_order_type type;
-  /* Offset within output section.  */
+  /* Offset within output section in bytes.  */
   bfd_vma offset;
-  /* Size within output section.  */
+  /* Size within output section in octets.  */
   bfd_size_type size;
   /* Type specific information.  */
   union