Minimal TS streamlog

Created by: rete

BEGINRELEASENOTES

• Minimal adjustements for a thread safe implementation of streamlog
  • The global logstream instance streamlog::out becomes thread_local.
  • The global logger configuration is hold via an internal class logconfig
  • The user can initialize the global logger via, e.g:

logstream::global_init( &std::cout, "loggername" , MESSAGE::name() ) ;

• Log levels registered automatically via the logstream::global_init() method
• To cope with backward compatibility, users can use a pre-processor condition to initialize the logging:

#ifdef STREAMLOG_NEW_TS_IMPL
  // initialize the global logger config (new implementation)
  logstream::global_init( &std::cout, "loggername" , MESSAGE::name() ) ;
#else 
  // intiialize the global logger instance itself (old implementation)
  streamlog::out.init( std::cout, "loggername" ) ;
#endif

• Added examples for standard streamlog and streamlog in multi-threading environment

ENDRELEASENOTES

The rest of the library has been updated internally, but the interface stays the same (except initialization as shown above). Note also that the multi-threaded example has been tested with helgrind and works fine.