Adapt install.pl to new coding style. * Switch to Getopt::Long, change coding style; limit line length. * Replace 'die' and 'warn' by calls to &Bleat(). * Completely changed options due to new GetOpt::Long processing. * Adapt to changes in NewsStats.pm * Redo documentation. * Update TODO. Signed-off-by: Thomas Hochstein <thh@inter.net>