In monitor mode dvbinfo runs as Unix daemon and the logging goes to syslog instead of stderr.
- added -m (--monitor) commandline switch to run in the background
- added -s (--summary) commandline switch to produce bitrate summary files
- added --summary-file commandline switch to give a summary-file name (default: stdout)
- added --summary-period commandline switch to write every <n> ms a new summary file
- implemented a logging callback function for routing the dvbpsi log messages to dvbinfo application