#73 getoptions -- help or error?

[Glenn Jackman]

In the ::cmdline::getoptions procedure, there is no
way to differentiate between a user who wants help
and passes a -? or -help option, and a user who has
entered an unknown option. In both cases, the
getoptions proc calls
error [cmdline::usage $optlist $usage]

I would suggest the attached patch which:
1. changes [error] to [return -code -1] if the user
wants help, to differentiate from a real error
2. changes the error string if a real error
occurred.

[Glenn Jackman]

context diff file

[Andreas Kupries]

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user_id=75003

This changes the public interface, hence an update of the
major version number for this package and tcllib is in
order. Marking this item with

MAJOR_VERSION_UPDATE

to find it and others of thre same kind in a search.