Log to stderr or stdout based on log level

Description:

These flags indicate that an attempt should be made to output log messages with the specified log level to stderr or stdout. This action is often required when a process does something that should not go unnoticed at startup (e.g., it exits because of a critical error) and it is useful to output a log message to command line outputs.

Definitions:

#define QH_LOG_SHUTDOWN_CL 

#define QH_LOG_CRITICAL_CL 

#define QH_LOG_ERROR_CL 

#define QH_LOG_WARNING_CL 

#define QH_LOG_NOTICE_CL 

#define QH_LOG_INFO_CL