* po/POTFILES.in: Replace by ...
* po/POTFILES: New.
* configure.ac (AC_PROG_AWK): New.
(AM_PO_SUBDIRS): Remove.
(AC_CONFIG_FILES): Replace Makefile.in by Makefile.
(LINGUAS,POTFILES,POFILES,NSIFILES): New ac_subst variables.
* po/Makefile.am: New.
* po/Makefile.in.in: Remove
* po/Makevars: Remove.
* po/nsis-xgettext.sh: Remove.
* po/Rules-nsis: Remove.