javac warnings in generated code

[ben-manes]

To help maintain code health, we build with -Xlint:all -Werror by default. The generated thrift types and services contain warnings such as,

warning: [unchecked] unchecked generic array creation of type T[] for varargs parameter

It would nice to have the code contain SuppressWarnings where appropriate so that the code is lint free.

P.S. This is on JDK6.

[nshkrob]

There is a patch to address some of these: #142.

Feel free to submit another one that fixes that particular warning.