Improve parallelization on salted table query.
Rename convertSchemaIntoBinaryRowKey and remove unused argument.
Merge pull request #143 from tonyhuang/salting

Improve parallelization on salted table query.
Big fix when there is variable length slots.
Big fix when there is variable length slots II.
fix compilation error and make binary row key schema static, tweak column modification impl to remove method on PDataType
Merge pull request #144 from tonyhuang/salting

Big fix when there is variable length slots.
Fix a bug in which maxKey maynot be long enough to hold the longest key.
Merge pull request #146 from tonyhuang/salting

Fix a bug in which maxKey maynot be long enough to hold the longest key.