Support infixes

[jrwdunham]

Currently, the only way for the OLD to handle an infix is to treat it as a regular affix, i.e., a suffix or prefix. Then the morphological parsers could be used to construct a phonology that handles the surface manifestation of that affix.

However, given the Leipzig glossing rules, angle brackets are used:

b<um>ili
<ACTFOC>buy
'buy'

However, the OLD would not currently be able to parse something like the above, i.e., it would not be able to recognize "bili" glossed as "buy" as a morpheme and "um" glossed as "ACTFOC" as another and create links to their lexical entries. However, this is something that the OLD should support.