for review: additions to bag.m

[Andrew Bromage]

G'day all.

Andrew Bromage wrote:

> +	% Remove a list of values from a bag.  Duplicates are removed
> +	% from the bag the appropriate number of times.  Fail if any of
> +	% the items in the bag does not exist in the bag.

I've just realised how awkward (and incorrect) that sounds.  Change that
last sentence to:

	Fail if any of the items in the list do not exist in the bag.

> +	% Remove a list of values from a bag.  Duplicates are removed
> +	% from the bag the appropriate number of times.  Abort if the
> +	% item does not exist in the bag.

	Abort if any of the items in the list do not exist in the bag.

Cheers,
Andrew Bromage