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.