[SPARK-22416][SQL] Move OrcOptions from sql/hive to sql/core

## What changes were proposed in this pull request?

According to the [discussion](https://github.com/apache/spark/pull/19571#issuecomment-339472976) on SPARK-15474, we will add new OrcFileFormat in `sql/core` module and allow users to use both old and new OrcFileFormat.

To do that, `OrcOptions` should be visible in `sql/core` module, too. Previously, it was `private[orc]` in `sql/hive`. This PR removes `private[orc]` because we don't use `private[sql]` in `sql/execution` package after [SPARK-16964](https://github.com/apache/spark/pull/14554).

## How was this patch tested?

Pass the Jenkins with the existing tests.

Author: Dongjoon Hyun <dongjoon@apache.org>

Closes #19636 from dongjoon-hyun/SPARK-22416.

sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/orc/OrcOptions.scala

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package org.apache.spark.sql.hive.orc
+package org.apache.spark.sql.execution.datasources.orc
 
 import java.util.Locale
 
@@ -27,7 +27,7 @@ import org.apache.spark.sql.internal.SQLConf
 /**
  * Options for the ORC data source.
  */
-private[orc] class OrcOptions(
+class OrcOptions(
     @transient private val parameters: CaseInsensitiveMap[String],
     @transient private val sqlConf: SQLConf)
   extends Serializable {
@@ -59,7 +59,7 @@ private[orc] class OrcOptions(
   }
 }
 
-private[orc] object OrcOptions {
+object OrcOptions {
   // The ORC compression short names
   private val shortOrcCompressionCodecNames = Map(
     "none" -> "NONE",

sql/hive/src/main/scala/org/apache/spark/sql/hive/orc/OrcFileFormat.scala

@@ -39,6 +39,7 @@ import org.apache.spark.sql.SparkSession
 import org.apache.spark.sql.catalyst.InternalRow
 import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.execution.datasources._
+import org.apache.spark.sql.execution.datasources.orc.OrcOptions
 import org.apache.spark.sql.hive.{HiveInspectors, HiveShim}
 import org.apache.spark.sql.sources.{Filter, _}
 import org.apache.spark.sql.types.StructType

sql/hive/src/test/scala/org/apache/spark/sql/hive/orc/OrcSourceSuite.scala

@@ -24,6 +24,7 @@ import org.apache.orc.OrcConf.COMPRESS
 import org.scalatest.BeforeAndAfterAll
 
 import org.apache.spark.sql.{QueryTest, Row}
+import org.apache.spark.sql.execution.datasources.orc.OrcOptions
 import org.apache.spark.sql.hive.test.TestHiveSingleton
 import org.apache.spark.sql.internal.SQLConf
 import org.apache.spark.sql.sources._