[Synthesize with HermitCrab] duplicate affix glosses should generate an warning

[rmlockwood]

RS in the abc lexicon had a prefix that had 3 senses. One for each template slot it was associated with. Synthesis failed for a word using this prefix because the first sense was used and it didn't match the first template.

We should give the user a warning when the affix gloss is not unique at least within an entry.