1) added clover exclude org/apache/hadoop/hive/ant/**/*
2) reverted back with-clover-EXPERIMENTAL in the root build.xml -- need to think more is that worth to impl that.
Merge branch 'fb-ANT-REFACTORED-trunk-gd' of https://github.com/griddynamics/hive into fb-ANT-REFACTORED-trunk-gd