Log Message:
Update gnupg to 1.4.21

Changelog:
2016-08-17  Werner Koch  <wk@gnupg.org>

	Release 1.4.21.

	gpg: Add dummy option --with-subkey-fingerprint.
	* g10/gpg.c (opts): Add dummy option.

	build: Create a swdb file during "make distcheck".
	* Makefile.am (distcheck-hook): New.

2016-08-17  Ineiev  <ineiev@gnu.org>

	po: Update Russian translation.

2016-08-17  Werner Koch  <wk@gnupg.org>

	random: Hash continuous areas in the csprng pool.
	* cipher/random.c (mix_pool): Store the first hash at the end of the
	pool.

	cipher: Improve readability by using a macro.
	* cipher/random.c (mix_pool): Use DIGESTLEN instead of 20.

2016-08-09  Daniel Kahn Gillmor  <dkg@fifthhorseman.net>

	gpg: Avoid publishing the GnuPG version by default.
	* g10/gpg.c (main): initialize opt.emit_version to 0
	* doc/gpg.texi: document different default for --emit-version

2016-08-04  Daniel Kahn Gillmor  <dkg@fifthhorseman.net>

	Clean up "allow to"
	* README, cipher/cipher.c, cipher/pubkey.c, doc/gpg.texi: replace
	  "allow to" with clearer text

	In standard English, the normal construction is "${XXX} allows ${YYY}
	to" -- that is, the subject (${XXX}) of the sentence is allowing the
	object (${YYY}) to do something.  When the object is missing, the
	phrasing sounds awkward, even if the object is implied by context.
	There's almost always a better construction that isn't as awkward.

	These changes should make the language a bit clearer.

	Fix spelling: "occured" should be "occurred"
	* checks/armor.test, cipher/des.c, g10/ccid-driver.c, g10/pkclist.c,
	  util/regcomp.c, util/regex_internal.c: correct the spelling of
	  "occured" to "occurred"

2016-08-04  NIIBE Yutaka  <gniibe@fsij.org>

	g10: Fix checking key for signature validation.
	* g10/sig-check.c (signature_check2): Not only subkey, but also primary
	key should have flags.valid=1.

2016-08-03  Justus Winter  <justus@g10code.com>

	Partially revert "g10: Fix another race condition for trustdb access."
	This amends db246f8b which accidentally included the compiled
	translation files.

2016-07-09  NIIBE Yutaka  <gniibe@fsij.org>

	gpgv: Tweak default options for extra security.
	* g10/gpgv.c (main): Set opt.no_sig _cache, so that it doesn't depend on
	cached status.  Similarly, set opt.flags.require_cross_cert for backsig
	validation for subkey signature.

2016-07-06  NIIBE Yutaka  <gniibe@fsij.org>

	g10: Fix keysize with --expert.
	* g10/keygen.c (ask_keysize): It's 768 only for DSA.

2016-06-28  NIIBE Yutaka  <gniibe@fsij.org>

	g10: Fix --list-packets.
	* g10/gpg.c (main): Call set_packet_list_mode after assignment of
	opt.list_packets.
	* g10/mainproc.c (do_proc_packets): Don't stop processing with
	--list-packets as the comment says.
	* g10/options.h (list_packets): Fix the comment.
	* g10/parse-packet.c: Fix the condition for opt.list_packets.

2016-06-15  Niibe Yutaka  <gniibe@fsij.org>

	g10: Fix another race condition for trustdb access.
	* g10/tdbio.c (create_version_record): Call create_hashtable to always
	make hashtable, together with the version record.
	(get_trusthashrec): Remove call to create_hashtable.

2016-02-12  NIIBE Yutaka  <gniibe@fsij.org>

	g10: Make sure to have the directory for trustdb.
	* g10/tdbio.c (tdbio_set_dbname): Return earlier if !CREATE.  Check
	the directory and create it if none before calling take_write_lock.

2016-02-01  Werner Koch  <wk@gnupg.org>

	Fix possible sign extension problem with newer compilers.
	* cipher/des.c (READ_64BIT_DATA): Cast to u32 before shifting by 24.
	* cipher/blowfish.c (do_encrypt_block): Ditto.
	(do_decrypt_block): Ditto.
	* cipher/camellia.c (CAMELLIA_RR8): Ditto.
	* cipher/cast5.c (do_encrypt_block): Ditto.
	(do_decrypt_block): Ditto.
	(do_cast_setkey): Ditto.
	* cipher/twofish.c (INPACK): Ditto.
	* util/iobuf.c (block_filter): Ditto.

2016-01-26  NIIBE Yutaka  <gniibe@fsij.org>

	g10: Fix iobuf API of filter function for alignment.
	* include/iobuf.h (struct iobuf_struct): Remove DESC.
	* util/iobuf.c (iobuf_desc): New.
	(print_chain, iobuf_close, iobuf_open, iobuf_fdopen, iobuf_sockopen)
	(iobuf_create, iobuf_append, iobuf_openrw, iobuf_ioctl)
	(iobuf_push_filter2, pop_filter, underflow): Use iobuf_desc.
	(file_filter, sock_filter, block_filter): Fill the description.
	* g10/armor.c, g10/cipher.c, g10/compress-bz2.c, g10/compress.c,
	g10/encode.c, g10/encr-data.c, g10/mdfilter.c, g10/pipemode.c,
	g10/progress.c, g10/textfilter.c: Likewise.

2016-01-15  Werner Koch  <wk@gnupg.org>

	Fix possible AIX problem with sysconf in rndunix.
	* cipher/rndunix.c [HAVE_STDINT_H]: Include stdint.h.
	(start_gatherer): Detect misbehaving sysconf.

2016-01-13  NIIBE Yutaka  <gniibe@fsij.org>

	Fix to support git worktree.
	* Makefile.am: Use -e for testing .git.

2015-12-21  NIIBE Yutaka  <gniibe@fsij.org>

	po: Update Japanese translation.