* split log console output sink into two sinks, one for cout and one for cerr.

* remove logger_oldboost_version files and add ifdef boost version in logger.cxx instead

* change default logger level in FairMqProgOptions

fairmq/logger/logger_def.h

@@ -87,6 +87,7 @@ inline std::string write_in(const std::string& text_in_bold)
 // typedef
 typedef fairmq::severity_level custom_severity_level;
 #define SEVERITY_THRESHOLD custom_severity_level::TRACE
+#define SEVERITY_ERROR custom_severity_level::ERROR
 
 // tags used for log console or file formatting
 struct tag_console;