Inconsistent mapping of interjections

[GoogleCodeExporter]

These mappings are great! But there's an inconsistency in how interjections (at 
least in English) are handled: the 'UH' tag in the en-ptb.map maps to 'X'. 
However, the 'UH' tag in en-brown.map maps to 'PRT', (as does the '!' tag in 
en-tweet.map). The 'PRT' mapping seems like the right one, and should probably 
be the same for both the Brown and PTB tags (since it's basically the same tag).

Original issue reported on code.google.com by terry.sz...@gmail.com on 23 Mar 2012 at 9:04