UDF to convert from binary to hex

create a binary to hex conversion UDF for hive versions < 0.12.0 which don't have any binary conversion functions
Update UDFBytesToHex.java
Merge pull request #5 from bpmason1/patch-1

UDF to convert from binary to hex
Merge pull request #6 from tuplejump/cas-support-cql

Cas support cql