Please review FunctionsTest PredicatesTest improvement to eliminate code coverage gap

[Amy Lu]

This is improvement for FunctionsTest and PredicatesTest to 
eliminatecode coverage gap in java.util.function.Functions and Predicates.

Please review:
webrev: 
https://dl.dropbox.com/u/5812451/yl153753/lambda_test/webrev.00/index.html
test results: 
https://dl.dropbox.com/u/5812451/yl153753/lambda_test/results/test-ng/test-reports/index.html
code coverage: 100% 
https://dl.dropbox.com/u/5812451/yl153753/lambda_test/jcov_result/report/index.html

If jira Issue needed, should I create it under JDK core-libs/java.util, 
any special labels needed for lambda(test) changes?

Thanks,
Amy