Fix http-proxy configuration documentation.
There is no way to configure this through kleopatra atm.
- configure.ac: Update compendium Version.
- doc/manual/gpg4win-compendium-de.tex, doc/manual/gpg4win-compendium-en.tex: Make it clear that you have to edit gpg.conf for proxy setting.
- GnuPG-Bug-Id: T2063