[SPARK-6505] [SQL] Remove the reflection call in HiveFunctionWrapper

according liancheng‘s  comment in https://issues.apache.org/jira/browse/SPARK-6505,  this patch remove the  reflection call in HiveFunctionWrapper, and implement the functions named "deserializeObjectByKryo" and "serializeObjectByKryo" according the functions with the save name in
org.apache.hadoop.hive.ql.exec.Utilities.java

Author: baishuo <vc_java@hotmail.com>

Closes #5660 from baishuo/SPARK-6505-20150423 and squashes the following commits:

ae61ec4 [baishuo] modify code style
78d9fa3 [baishuo] modify code style
0b522a7 [baishuo] modify code style
a5ff9c7 [baishuo] Remove the reflection call in HiveFunctionWrapper