HIVE-5224 : When creating table with AVRO serde, the "avro.schema.url" should be about to load serde schema from file system beside HDFS (Shuaishuai Nie via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1556651 13f79535-47bb-0310-9956-ffa450edef68