* lang/cpp/src/Makefile.am: Add headers as deps and install them. (AM_CPPFLAGS): Add BUILDING_GPGMEPP to be used in export macros.
* configure.ac: Configure Makefiles. * lang/Makefile.am: Add cpp subdir * lang/cpp/Makefile.am: New. Add src subdir. * lang/cpp/src/Makefile.am: New. Basic buildsystem.