Restrict the range of keys that have to be queried in the BTree for range comparisons on the range index. BTree will now restrict the search to keys starting with a given prefix (collectionId, typeId). This improves query performance for range comparisons <, >, <=, >=, != on all value types.
Restrict the range of keys that have to be queried in the BTree for range comparisons on the range index. BTree will now restrict the search to keys starting with a given prefix (collectionId, typeId). This improves query performance for range comparisons <, >, <=, >=, != on all value types.

svn path=/trunk/eXist-1.0/; revision=1316

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