* packages/packages.current: Update claws.
* patches/claws-mail-3.9.1/01-w64-mingw32.patch: New.
* patches/claws-mail-3.9.1/02-ldap-opt.patch: new.
* patches/claws-mail-3.9.1/03-all-crypto.patch: New.
* patches/claws-mail-3.9.1/20-c416e89d.patch: New
* patches/claws-mail-3.9.1/21-66aa06c7.patch: New.
* patches/claws-mail-3.9.1/50-configure.patch: New.
* patches/claws-mail-3.9.1/51-version-file.patch: New.
* patches/claws-mail-3.9.1/80-src-makefile.postcfg-build: new.
* Makefile.am (EXTRA_DIST): Add new patches.  Remove 3.9.0 patches.
* src/Makefile.am (gpg4win_pkg_claws_mail_configure): Adjust options.
* src/inst-claws-mail.nsi: Install now included plugins.
* src/uninst-claws-mail.nsi: Uninstall them.
* include/config.nsi.in, src/inst-sections.nsi: Remove support for the
now included plugins.
* src/inst-attachwarner.nsi, src/inst-bsfilter_plugin.nsi
* src/inst-notification_plugin.nsi, src/inst-tnef_parse.nsi
* src/uninst-attachwarner.nsi, src/uninst-bsfilter_plugin.nsi
* src/uninst-notification_plugin.nsi, src/uninst-tnef_parse.nsi: Remove.