Modification history of drsdaq program
--------------------------------------

23/3/2009   Changed 'Events' entry in run header. It now gives the number of
    	    events in the current file.
24/3/2009   Copied into FACT subversion directory. Updated location of
    	    configuration file and PixelMap.txt (in config/ in repository).
	    Improved PrintMessage() and error outputs.
26/3/2009   Added PixelMap translation to communication with HV control.
30/3/2009   Added feedback gain. Checked into repository.
1/4/2009    Changes many 'char *' to 'const char *' to honour compiler warning
            on ihp-pc26 (newer version of g++ than on eth-vme02)
2/4/2009    Intoduced check for magic number in RawDataCTX.cc
3/4/2009    Added frequency and scale factor transmission to socket protocol
6/4/2009    Allowed reading of data via read command also while DAQ is active.
22/4/2009   Included sizes of RunHeader, EventHeader and BoardStructure in
    	    RunHeader and changed some data widths in RunHeader to U32 to
	    increase compatibility with Magic raw data format. Unique run
	    numbers are now generated using the file LastRunNumber.
28/4/2009   Raw file writing uses now writev() and is changed entirely to
    	    Linux system calls instead of C++ library functions. Introduced
	    new magic number that indicates an error while writing. More
	    extensive error checking for I/O functions. Requesting zero events
	    will let run go until stopped manually. Feedback writes slow data.
29/4/2009   DAQ writes run summary to slow data file.