Move ORC reader to new presto-orc module
Move all presto-hive ORC code into separate package
Fix ORC MapJsonReader timezone
Consolidate Hive session code in HiveSessionProperties
Update ORC and DWRF to respect optimized_reader_enabled session property
Update to floatingdecimal 0.2

This version prints a better error message when attempting to use it with Java 8
Set offset and length in RcFilePageSource