fix common/mprpc/* coding-style

+ fix common/mprpc/* coding-style according to Jubatus-
  coding standard excludig:
  - [readability/casting] [4]
  - [runtime/references] [2]
  - [runtime/rtti] [5]
fix for cpplint
fix src/common for cpplint
Add msgpack to cpplint third-party headers
Fix coding style for graph
fix stat for cpplint
Merge branch 'feature/codestyle' of github.com:jubatus/jubatus into feature/codestyle
Ignore spaces after throw
Merge branch 'feature/codestyle' of github.com:unnonouno/jubatus into feature/codestyle
Ignore rand function
fix include guard for stat
fix regression for cpplint
fix code format in server
fix code format in server (refine)