Release 4.7.0.

Squashed commit of the following:

commit 2e20c9eaaa11b92e12b24be441c8d473df4e4a82
Author: HARUYAMA Seigo <haruyama@unixuser.org>
Date:   Thu Feb 27 15:35:52 2014 +0900

    Change how to check stop port.

commit ecda61ebdcbd4fac177f0be7e45176b3c499f3f4
Author: HARUYAMA Seigo <haruyama@unixuser.org>
Date:   Thu Feb 27 15:17:27 2014 +0900

    Update lucene-gosen.

commit bebec5b3cffb6e18a0ecd339a52dd98a486af58a
Author: HARUYAMA Seigo <haruyama@unixuser.org>
Date:   Thu Feb 27 09:36:40 2014 +0900

    Remove stream.file test.

    solr.UpdateRequestHandler does not support stream.file.
    (solr.CSVRequestHandler supports it, but CSVRequestHandler is deprecated.)

commit b2ee5985dccc44931eb5f88e693d1aa01c958708
Author: HARUYAMA Seigo <haruyama@unixuser.org>
Date:   Thu Feb 27 09:23:37 2014 +0900

    Update StandardPlusTokenizer.

commit eea4e3b56ca7670fde302c36cde8d975ee5b6eef
Author: HARUYAMA Seigo <haruyama@unixuser.org>
Date:   Wed Feb 26 10:47:50 2014 +0900

    Use Solr 4.7.0.

commit af64cb0a0e38910b51b5368bf437aca1323bc5e3
Author: HARUYAMA Seigo <haruyama@unixuser.org>
Date:   Wed Feb 26 10:47:20 2014 +0900

    Update commons-lang3 (3.1 to 3.2.1).