PRI #273, UTS #39 draft data updated

[Rick McGowan]

The draft and data for the proposed update UTS #39 were both changed on 
2014-07-24.

It appears that the issue previously noted with idempotence in the UTS 
#39 tables can be addressed for all of the mappings, with some extensive 
changes.​ The issue will be documented in the text ( see 
http://www.unicode.org/reports/tr39/proposed.html ) and the PRI text is 
being adjusted as well.

The PRI page has been updated as well:
http://www.unicode.org/review/pri273/