tree d355be40c497e38d637d88f30115c8ad63387287
parent 7ff399580f8fef9bf666d0fe06aced5b11a2881d
author Jatin Lodhia <jlodhia@google.com> 1437173856 -0700
committer Jatin Lodhia <jlodhia@google.com> 1437173881 -0700

Add schema to syncbase
1) Add client APIs related to managing db schema
- adds schema arg to NoSQLDatabase() bind
- adds db.UpgradeIfOutdated() method
- adds db.GetSchemaManager() which returns an object with {Get,Set}SchemaMetadata
- adds Schema{metadata, upgrader} struct and SchemaUpgrader interface
2) Add vdl changes
- {Get,Set}SchemaMetadata methods
- optional SchemaMetadata arg to Database.Create

MultiPart: 1/2
Change-Id: Ia920bbc55c40145cbacf8245c4d1682dcb02496d