xotcl.c

* Continued with info orthogonality change
<object> info mixin ?pattern?
<class> info instmixin ?pattern?

?pattern? behaves exactly like in the change of two days
ago. Preceding colons in the name of the queried class are not
required.

Still to do "-closure" in

<class> info instmixin -closure ?pattern?

* In all mentioned calls, where pattern refers to an object/class
and it contains wild-cards, a preceding :: is added automatically
to the search pattern, if it is missing. Since all object names
start with ::, an omitted leading :: in a search pattern is an
obvious mistake

* Made the behavior "pattern" in the following calls identical
concerning wild cards and object lookups

<object> mixin delete pattern
<class> instmixin delete pattern
<class> superclass delete pattern

* extended regresson test