Pig package supporting both hadoop 1 and 2

[Julien Le Dem]

Hi Pig developers,
I'm looking into having a Pig package that works both for Hadoop 1.0 and Hadoop 
2.0
That means have both pig*.jar and pig*-h2.jar in the package and choosing the 
right one dynamically.
In particular I created this JIRA as a first step: 
https://issues.apache.org/jira/browse/PIG-3311
I'm curious to know how others do it.
Yahoo! for example? (Rohini?)
Thanks,
Julien