gpg: Fix bug parsing a zero length user id.

* g10/getkey.c (get_user_id): Do not call xmalloc with 0.

* common/xmalloc.c (xmalloc, xcalloc): Take extra precaution not to
pass 0 to the arguments.
--

The problem did not occur in 1.x because over there the xmalloc makes
sure to allocate at least one byte.  With 2.x for most calls the
xmalloc of Libgcrypt is used and Libgcrypt returns an error insteead
of silent allocating a byte.  Thus gpg 2.x bailed out with an
"Fatal: out of core while allocating 0 bytes".

The extra code in xmalloc.c is for more robustness for the other
xmalloc calls.
gpgsm: Add a way to save a found state.

* kbx/keybox-defs.h (keybox_found_s): New.
(keybox_handle): Factor FOUND out to above.  Add saved_found.
* kbx/keybox-init.c (keybox_release): Release saved_found.
(keybox_push_found_state, keybox_pop_found_state): New.

* sm/keydb.c (keydb_handle): Add field saved_found.
(keydb_new): Init it.
(keydb_push_found_state, keydb_pop_found_state): New.
gpgsm: Handle re-issued CA certificates in a better way.

* sm/certchain.c (find_up_search_by_keyid): Consider all matching
certificates.
(find_up): Add some debug messages.
--

The DFN-Verein recently re-issued its CA certificates without
generating new keys.  Thus looking up the chain using the authority
keyids works but may use still existing old certificates.  This may
break the CRL lookup in the Dirmngr.  The hack to fix this is by using
the latest issued certificate with the same subject key identifier.

As usual Peter Gutman's X.509 style guide has some comments on that
re-issuing.

GnuPG-bug-id: 1644
gpg: Graceful skip reading of corrupt MPIs.

* g10/parse-packet.c (mpi_read): Change error message on overflow.
--

This gets gpg 2.x in sync to what gpg 1.4 does.  No need to die for a
broken MPI.

GnuPG-bug-id: 1593

Resolved conflicts:
	g10/parse-packet.c - whitespaces fixes.
gpg: Simplify default key listing.

* g10/mainproc.c (list_node): Rework.
--

GnuPG-bug-id: 1640
gpg: Avoid NULL-deref in default key listing.

* g10/keyid.c (hash_public_key): Take care of NULL keys.
* g10/misc.c (pubkey_nbits): Ditto.
--

This problem was mainly due to our ECC code while checking for opaque
MPIs with the curve name.
doc: Minor texi updates.

--
gpgsm: New commands --export-secret-key-{p8,raw}

* sm/gpgsm.c: Add new commands.
* sm/minip12.c (build_key_sequence): Add arg mode.
(p12_raw_build): New.
* sm/export.c (export_p12): Add arg rawmode.  Call p12_raw_build.
(gpgsm_p12_export): Ditto.
(print_short_info): Print the keygrip.
artwork: Add 128x128 variant of the logo.

--
Add new option --with-secret.

* g10/gpg.c: Add option --with-secret.
* g10/options.h (struct opt): Add field with_secret.
* g10/keylist.c (public_key_list): Pass opt.with_secret to list_all
and list_one.
(list_all, list_one): Add arg mark_secret.
(list_keyblock_colon): Add arg has_secret.
* sm/gpgsm.c: Add option --with-secret.
* sm/server.c (option_handler): Add option "with-secret".
* sm/gpgsm.h (server_control_s): Add field with_secret.
* sm/keylist.c (list_cert_colon): Take care of with_secret.  Also move
the token string from the wrong field 14 to 15.
--

This option is useful for key managers which need to know whether a
key has a secret key.  This change allows to collect this information
in one pass.
gpgsm: Fix commit be07ed65.

* sm/server.c (option_handler): Use "with-secret".
gpg: Auto-migrate existing secring.gpg.

* g10/migrate.c: New.
* g10/import.c (import_old_secring): New.
(import_one): Add arg silent.
(transfer_secret_keys): Add arg batch.
(import_secret_one): Add args batch and for_migration.
* g10/gpg.c (main): Call migration function.
gpg: Require confirmation for --gen-key with experimental curves.

* g10/keygen.c (ask_curve): Add arg both.  Require confirmation for
Curve25519.
Remove keyserver helper code.

* configure.ac: Remove keyserver helper related stuff.
* Makefile.am (SUBDIRS): Remove keyserver.
* keyserver/Makefile.am: Remove.
--

The dirmngr is used instead of the keyserver helpers.  Thus there is
more need to distribute the old code.  We keep it in the repo for
references, though.
Update README file.

--

The copyright list in AUTHORS as been compiled from a distribution
tarball.
po: Auto-update po files.

--
Release 2.1.0-beta442.

--

This beta is small contribution for today's Reset The Net campaign.

  It is a crying shame that the government of my country is not
  willing to offer Edward Snowden asylum and protect him from the evil
  institutions of those allies who once thankfully kicked out the most
  evil German powers.  Back in these dark years, many people had to
  ask for asylum over there and it was granted.  Now we have to fear
  their Blockwarts who are listening to the entire world.  It would be
  more than justified for us to help that brave guy.
Post beta release update.

--

656fef6454972cb91741c37a0fd19cd9ade9db9c  gnupg-2.1.0-beta442.tar.bz2
Improve the beta number generation.

* autogen.sh: Add option --find-version
* configure.ac: Rework the setting of the mym4_ variables.
--

The old system was not too well defined if no release for a series has
yet been done.  We now introduce a "PACKAGE-N.M-base" tag to solve
this problem.  To keep the M4 code readable the GIT parsing has been
moved to ./autogen.sh.
gpg: Use more specific reason codes for INV_RECP.

* g10/pkclist.c (find_and_check_key, build_pk_list): Use more specific
reasons codes for INV_RECP.
--

GnuPG-bug-id: 1650