Fix Makefile regression.

* agent/Makefile.am (gpg_agent_DEPENDENCIES): Remove cruft from wrong
resolve conflict 2013-04-25.
(gpg_agent_DEPENDENCIES): Remove obsolete gpg_agent_res_deps
(gpg_agent_LDFLAGS): Remove obsolete gpg_agent_res_ldflags.
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This fixes 88e24341e57c96e31a25e92e09d67989e64cc1c1.  Thanks to
Christian Aistleitner for pinpointing this bug.  Am sorry for accusing
automake to have introduced this bug; I should have washed my own eyes.

GnuPG-bug-id: 1511
Update AUTHORS.

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Prepare for newer automake versions.

* configure.ac (AM_INIT_AUTOMAKE): Replace 2 argument form by the
option form.  Add options from the top Makefile.
(AM_CONFIG_HEADER): Rename to AC_CONFIG_HEADER.
* Makefile.am (AUTOMAKE_OPTIONS): Remove.

* kbx/Makefile.am: Remove INCLUDES.  Include cmacros.am.  FActor some
AM_CPPFLAGS options to  AM_CFLAGS.
Modernize two format string file name quotes.

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