I know that we are supposed to discuss new features before adding them,
but this case the coding was so simple that I decided to write them up and
commit them. If we decide that they are no good I'll just revert them
back.
The two options I added to the Add command are useful if one want to
change the stacking order of several windows while keeping the internal
order between them. See http://fvwm.lair.be/viewtopic.php?t=1381 for more
detail on where it would be useful.
Things that are up for discussion are:
* should the options be kept
* if the options should require a flag string to follow them (to
definately not risk to break some config using functions named "Reverse"
or "UseStack"). Now they apply as long as there is a non-empty string
after them.
* should the options be allowed in any order. Now Reverse has to precede
UseStack.
/Viktor
