Improved DataBinder Javadoc for xxx*yyy pattern matching.

The default documentation does not mention xxx*yyy pattern matching,
which is, however, supported by PatternMatchUtils. Such a pattern
can be useful for matching nested properties in all elements of a
collection (e.g. property[*].nestedProperty).

The documentation is also inconsistent in other places in the 
framework where PatternMatchUtils is used, but I do not know if this 
is on purpose.

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