[SPARK-2963] REGRESSION - The description about how to build for using CLI and Thrift JDBC server is absent in proper document  -

#1885 resolved documentation issue about building for using CLI and Thrift JDBC server but #2006 brought regression.

The most important things I mentioned in #1885 is as follows.

* People who build Spark is not always programmer.
* If a person who build Spark is not a programmer, he/she won't read programmer's guide before building.

So, how to build for using CLI and JDBC server is not only in programmer's guide.