Beast cleanup:
* Remove unused BufferType
* Move IPAddress function definitions to hte header
* Move cyclic_iterator to container/
* Remove obsolete classes:
  - NamedPipe
  - ReadWriteLock
  - ScopedReadLock
  - ScopedWriteLock
  - LockGuard
Add streams module

Conflicts:
	src/beast/Builds/VisualStudio2013/beast.vcxproj.filters