Add scute as new package
* configure.ac: Declare new package and dependencies. * packages/packages.current (scute): Add a snapshot. * src/Makefile.am (EXTRA_DIST): Add nsi files. (gpg4win_spkgs): Add scute. * src/config.nsi.in: The usual * src/inst-sections.nsi: Add scute. Install it when GnuPG is installed. * src/mkportable-full.h (full_files): Add scute.dll * src/inst-scute.nsi, src/uninst-scute.nsi: New.
Scute is very small so we can install it always when GnuPG
is installed. A further improvement could be to also
register it automatically with Mozilla Software.