Test cases for Alter table on Column Family
Changes for Alter Table and Key separator
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/main/java/com/salesforce/phoenix/schema/MetaDataClient.java
	src/main/java/com/salesforce/phoenix/schema/PTableImpl.java
	src/test/java/com/salesforce/phoenix/end2end/AlterTableTest.java
Phoenix#479 - Alter table with multiple columns support
Phoenix#479
Phoenix#479
Phoenix+479
Phoenix#479
Merge remote-tracking branch 'upstream/master' into Phoenix-479

Conflicts:
	src/main/java/com/salesforce/phoenix/schema/MetaDataClient.java
Merge remote-tracking branch 'upstream/master' into Phoenix-479
Phoenix#479
Reverting blank spaces
Removing empty spaces
modifications
Merge pull request #484 from mravi/Phoenix-479

Phoenix 479