- removed redundant white spaces in blank lines
  - removed redundant C++ namespace (isc::cc)
  - folded some too long lines
  - constify some variables
  - add UNUSED_PARAM for an unused variable (it compiles without it right now, but it'd be better to specify it for our internal code)
  - removed a duplicate include (asio.hpp in session_unittests.cc)
  - removed redundant space around '=' for default parameter spec (based on python coding guideline)


git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac296@2696 e5f2f494-b856-4b98-b285-d166d9295462