Merge pull request #79 from tonyhuang/decimal

Store decimal maxLength and scale in system table and check for value at bind time.
renamed Native to PDataCodec and cleaned up usage
Merge branch 'master' of github.com:forcedotcom/phoenix

Conflicts:
	src/main/java/com/salesforce/phoenix/coprocessor/MetaDataEndpointImpl.java
unit tests for key range intersection
Merge pull request #82 from ryang-sfdc/keyrange-intersect-test

unit tests for key range intersection