Fixed a bug in OtherINsChunker in hardstop checking.
PPChunk without an object organ => unassigned modifier.
Convert the position character at the end of a PP chunk to an organ
chunk.
Added isConstraintModifier attribute in Character, but made it
@XmlTrasient.
Included articles -- the, a, and -- in organ chunks. Neccessary for
finding SUBJECT_ORGEN_CHUNK.