rename sbopkg.conf.new; tweak SlackBuild

If we keep the Id keyword in sbopkg's config file, users having their
'sbopkg.conf' Id'ed as 'sbopkg.conf.new' can cause confusion, as seen on
LQ. So call it 'sbopkg.conf' in revision control and append '.new' when
creating the package.

tools/sbopkg.SlackBuild

@@ -36,6 +36,7 @@ find . \
 
 mkdir -p $PKG/etc/sbopkg
 cp -a etc/sbopkg/* $PKG/etc/sbopkg
+mv $PKG/etc/sbopkg/sbopkg.conf $PKG/etc/sbopkg/sbopkg.conf.new
 
 mkdir -p $PKG/usr/sbin
 cp usr/sbin/* $PKG/usr/sbin