[SPARK-5211][SQL]Restore HiveMetastoreTypes.toDataType

[yhuai]

jira: https://issues.apache.org/jira/browse/SPARK-5211

[SparkQA]

Test build #25484 has started for PR 4026 at commit 785cf61.

• This patch merges cleanly.

[marmbrus]

LGTM

[SparkQA]

Test build #25486 has started for PR 4026 at commit 153b6c0.

• This patch merges cleanly.

[SparkQA]

Test build #25484 has finished for PR 4026 at commit 785cf61.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[AmplabJenkins]

Test PASSed.
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Test PASSed.

[SparkQA]

Test build #25486 has finished for PR 4026 at commit 153b6c0.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds the following public classes (experimental):
  • val classServer = new HttpServer(conf, outputDir, new SecurityManager(conf), classServerPort, "HTTP class server")
  • case class QualifiedTableName(database: String, name: String)
  • case class CreateMetastoreDataSource(

[AmplabJenkins]

Test PASSed.
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Test PASSed.

[rxin]

FYI this no longer merges ...

[SparkQA]

Test build #25553 has started for PR 4026 at commit 15ee32b.

• This patch merges cleanly.

[SparkQA]

Test build #25553 has finished for PR 4026 at commit 15ee32b.

• This patch passes all tests.
• This patch merges cleanly.
• This patch adds no public classes.

[AmplabJenkins]

Test PASSed.
Refer to this link for build results (access rights to CI server needed):
https://amplab.cs.berkeley.edu/jenkins//job/SparkPullRequestBuilder/25553/
Test PASSed.

[rxin]

Merging in master. Thanks.