Class3

(1) Fixed a bug with the possessive prefixes in the case that the noun starts with a vowel, so we get e.g. ndaamoo not *naamoo.
(2) Now handling alternations like bzhiki vs. nbazhkiim in the lexicon by storing a form like "bazhiki" in nouns.csv, and use syncope.pl to create two separate entries in the .dic file.  Similarly, changed "gimaa" to "ogimaa" in nouns.csv, which generates "gimaa" (via straight syncopation) and "ogmaa" (protect first syllable then syncopate) in the .dic file.  Improved possessive prefix rules correctly lengthen the initial "o" to produce, e.g. "ndoogmaa".