Don't include libbfd.h outside of bfd, part 1

Don't include libbfd.h outside of bfd, part 1

Make BFD_ALIGN available to objcopy.  Fix assertions.  Don't use
bfd_log2 in ppc32elf.em or bfd_malloc in xtensaelf.em and bucomm.c.

bfd/
	* libbfd-in.h (BFD_ALIGN): Move to..
	* bfd-in.h: ..here.
	* elf32-ppc.h (struct ppc_elf_params): Add pagesize.
	* elf32-ppc.c (default_params): Adjust init.
	(ppc_elf_link_params): Set pagesize_p2.
	* libbfd.h: Regenerate.
	* bfd-in2.h: Regenerate.
binutils/
	* ar.c: Don't include libbfd.h.
	* objcopy.c: Likewise.
	* bucomm.c (bfd_get_archive_filename): Use xmalloc rather than
	bfd_malloc.
gas/
	* config/bfin-parse.y: Don't include libbfd.h.
	* config/tc-bfin.c: Likewise.
	* config/tc-rl78.c: Likewise.
	* config/tc-rx.c: Likewise.
	* config/tc-metag.c: Likewise.
	(create_dspreg_htabs, create_scond_htab): Use gas_assert not BFD_ASSERT.
	* Makefile.am: Update dependencies.
	* Makefile.in: Regenerate.
ld/
	* ldlang.c: Don't include libbfd.h.
	* emultempl/nds32elf.em: Likewise.
	* emultempl/ppc64elf.em: Likewise.
	* emultempl/ppc32elf.em: Likewise.
	(pagesize): Delete.
	(params): Update init.
	(ppc_after_open_output): Use params.pagesize.  Don't call bfd_log2.
	(PARSE_AND_LIST_ARGS_CASES): Use params.pagesize.
	* emultempl/sh64elf.em: Don't include libbfd.h.
	(after_allocation): Use ASSERT, not BFD_ASSERT.
	* emultempl/xtensaelf.em: Don't include libbfd.h.
	(replace_insn_sec_with_prop_sec): Use xmalloc, not bfd_malloc.
	* Makefile.am: Update dependencies.
	* Makefile.in: Regenerate.