release 5.0.6.0, fixed FSF address (#34859) and Maintainer lines (#34862)

release 5.0.6.0, fixed FSF address (#34859) and Maintainer lines (#34862)

* egg.el(egg-version): updated 5.0.5.0 -> 5.0.6.0
* *.el */*.el: fixed FSF address (#34859)
http://sourceforge.jp/ticket/browse.php?group_id=9668&tid=34859
* *.el: */*.el: deleted Maintainer lines in sources (#34862)
http://sourceforge.jp/ticket/browse.php?group_id=9668&tid=34862
TOMURA Satoru said that he resigned as the maintainer.
And I found that Mr. NIIBE and Mr. SHIIRAI are maintainers in sources.
But tyey are not tamago-tsunagi's maintainers.
So I deleted Maintainer lines in sources.

* its/jiskana.el: fixed #34859
* its.el: fixed #34859 #34862
* its/pinyin.el: fixed #34859 #34862
* its/zenkaku.el: fixed #34859 #34862
* its/quanjiao.el: fixed #34859 #34862
* egg/wnn.el: fixed #34859 #34862
* its/hangul.el: fixed #34859 #34862
* its/ascii.el: fixed #34859 #34862
* egg/sj3rpc.el: fixed #34859 #34862
* egg-edep.el: fixed #34859 #34862
* its/zhuyin.el: fixed #34859 #34862
* its/hira.el: fixed #34859 #34862
* egg/canna.el: fixed #34859 #34862
* its-keydef.el: fixed #34859 #34862 and deleted duplicating Keywords
line
* menudiag.el: fixed #34859
* its/bixing.el: fixed #34859 #34862
* eggrc: fixed #34859 #34862
* its/hankata.el: fixed #34859 #34862
* its/thai.el: fixed #34859 #34862
* egg.el: fixed #34859
* its/erpin.el: fixed #34859 #34862
* leim-list.el: fixed #34859 #34862
* its/aynu.el: fixed #34859 #34862
* egg/cannarpc.el: fixed #34859 #34862
* its/jeonkak.el: fixed #34859 #34862
* egg/sj3.el: fixed #34859 #34862
* docomp.el: fixed #34859 #34862
* egg-cnv.el: fixed #34859 #34862
* egg-com.el: fixed #34859 #34862
* egg-mlh.el: fixed #34859 #34862
* egg-sim.el: fixed #34859
* egg-x0213.el: fixed #34859 #34862
* egg/anthy.el: fixed #34859 #34862
* egg/anthyipc.el: fixed #34859 #34862
* egg/wnnrpc.el: fixed #34859 #34862
* its/kata.el: fixed #34859
* jisx0213.el: fixed #34859 #34862
* NEWS: added 5.0.6.0