IIOMetadataFormatImpl.getAttribute{Min,Max}Value throws an IllegalStateException
when the attribute is defined to contain a range of values that is inclusive
on one or both ends. The code incorrectly checks the attribute's
value type for equality against VALUE_RANGE, whereas VALUE_RANGE_MIN_INCLUSIVE,
etc., are also valid.

A regression test will be placed in test/javax/imageio/metadata/IIOMetadataFormatImplTest.java.