* man/generate_translations.mak: Generic rules for all the

* man/generate_translations.mak: Generic rules for all the
  generated translated manpages (if ENABLE_REGENERATE_MAN).
* man/Makefile.am: Removed rules for all the generated translated
  manpages.
* man/sv/Makefile.am, man/de/Makefile.am, man/fr/Makefile.am,
  man/pl/Makefile.am, man/ru/Makefile.am, man/it/Makefile.am:
  Include generate_translations.mak to handle the generated
  translations (XML and roff files).
* man/Makefile.am: Translated XML files moved from the CLEANFILES
  variable of man/Makefile.am to the various languages Makefiles.