Fix daemon mode in multiple programs under OSX

  - ccnet-server
  - ccnet
Merge pull request #57 from Chilledheart/daemonize_under_osx

Fix daemon mode in multiple programs under OSX
Add CMake Build System
Resolve pidfile resource leaks

This patch resolves resource leaks caused by not closing the file streams upon
an write error.
[lib] removal of unused code
[net] Add role for user

  - fix a issue with search_emailusers
  - fix bad memory usage
  - add id column for mysql
  - returning role string is not NULL string now