[SPARK-7743] [SQL] Parquet 1.7

Resolves [SPARK-7743](https://issues.apache.org/jira/browse/SPARK-7743).

Trivial changes of versions, package names, as well as a small issue in `ParquetTableOperations.scala`

```diff
-    val readContext = getReadSupport(configuration).init(
+    val readContext = ParquetInputFormat.getReadSupportInstance(configuration).init(
```

Since ParquetInputFormat.getReadSupport was made package private in the latest release.

Thanks
-- Thomas Omans

Author: Thomas Omans <tomans@cj.com>

Closes #6597 from eggsby/SPARK-7743 and squashes the following commits:

2df0d1b [Thomas Omans] [SPARK-7743] [SQL] Upgrading parquet version to 1.7.0

1 files changed, 3 insertions, 3 deletions

diff --git a/pom.xml b/pom.xml
index bcb6ef96a1..abb9b55400 100644
--- a/pom.xml
+++ b/pom.xml
@@ -136,7 +136,7 @@
     <!-- Version used for internal directory structure -->
     <hive.version.short>0.13.1</hive.version.short>
     <derby.version>10.10.1.1</derby.version>
-    <parquet.version>1.6.0rc3</parquet.version>
+    <parquet.version>1.7.0</parquet.version>
     <jblas.version>1.2.4</jblas.version>
     <jetty.version>8.1.14.v20131031</jetty.version>
     <orbit.version>3.0.0.v201112011016</orbit.version>
@@ -1080,13 +1080,13 @@
         </exclusions>
       </dependency>
       <dependency>
-        <groupId>com.twitter</groupId>
+        <groupId>org.apache.parquet</groupId>
         <artifactId>parquet-column</artifactId>
         <version>${parquet.version}</version>
         <scope>${parquet.deps.scope}</scope>
       </dependency>
       <dependency>
-        <groupId>com.twitter</groupId>
+        <groupId>org.apache.parquet</groupId>
         <artifactId>parquet-hadoop</artifactId>
         <version>${parquet.version}</version>
         <scope>${parquet.deps.scope}</scope>