Update debian/{changelog,control,copyright} to standards compliance.

R=daniel@pocock.pro
BUG=

Review URL: https://codereview.appspot.com/101000043

git-svn-id: http://libphonenumber.googlecode.com/svn@670 ee073f10-1060-11df-b6a4-87a95322a99c
Add debian/watch file for autogenerated archives from tags on GitHub.

R=daniel@pocock.pro
BUG=

Review URL: https://codereview.appspot.com/105970043

git-svn-id: http://libphonenumber.googlecode.com/svn@671 ee073f10-1060-11df-b6a4-87a95322a99c