* configure.ac: Add packages gpgmepp and qgpgme. Update dependencies
of packages previously depending on the combined gpgme package.
* doc/pkg-copyright.txt: Add copyright and license information for
gpgmepp and qgpgme.
* src/Makefile.am (gpg4win_kdepkgs): Add gpgmepp and qgpgme.
(gpg4win_excmkpkgs): Add gpgmepp.
(gpg4win_pkg_gpgme_configure, gpg4win_pkg_gpgme_ex_configure): Update
the configure options.
(gpg4win_pkg_gpgmepp_configure, gpg4win_pkg_gpgmepp_ex_configure,
gpg4win_pkg_qgpgme_configure): New.
* src/nsis/Makefile.am (EXTRA_DIST): Add new *.nsi files.
* src/nsis/config.nsi.in: Add defines for gpgmepp and qgpgme.
* src/nsis/inst-gpgme.nsi: Don't install files belonging to
gpgmepp/qgpgme.
* src/nsis/inst-gpgmepp.nsi, src/nsis/inst-qgpgme.nsi: New.
* src/nsis/inst-sections.nsi: Include the new *.nsi files. Update
dependencies of packages to install.
* src/nsis/uninst-gpgme.nsi: Don't remove files belonging to
gpgmepp/qgpgme.
* src/nsis/uninst-gpgmepp.nsi, src/nsis/uninst-qgpgme.nsi: New.