91/08/09 - JR - lstblock.c:
		modified to put the 2 header lines within /* */ also
91/09/18 - JR - delblk.c:
                Reduced from 6 to 4 options.  Modified to 'dbmove' only
                if the end of the user range has not been reached
                (otherwise, can cause error messages when range ends
                exactly at database end).
91/09/23 - JR - *.c:
                Extended file names from 40 to 80 characters
91/10/24 - JR - lst_prof:
		Modified to print bad fixes as 1E38 instead of 
		5965.232      
93/10/12 - JR - mkblkdir:
		Modified to allow conversion of databases to a different
		machine other than HOST_ENVIRONMENT.  The control file
		recognizes the option 'DESTINATION', which defaults to
		HOST_ENVIRONMENT if not used.  Use of option routines
		necessitate using an 'end' after specifying DB_NAME,
		PRD_NAME, and DESTINATION, prior to listing the 
		BLOCK_FILE and SD_NAME, if any.
94/06/20 - JR - mkblkdir:
		Modified to make use of producer definition file optional;
		user can instead specify the following options:
		DATASET_ID, PRODUCER_ID and BLOCK_DIR_TYPE instead of
		PRD_NAME
94/08/02 - JR - chtime:
		Modified to set the TIME_CORRECTED bit in the data processing
		mask.  It currently used the dpmask.h bit definitions for
		ADCP databases in codas3/adcp/include, which has the rightmost
		bit as the TIME_CORRECTED bit.  If we do start defining masks
		for other types of databases (non-ADCP), we should consistently
		continue this practice (rightmost bit = TIME_CORRECTED).
94/12/01 - JR - mkblkdir:
		Eliminated PRODUCER_ID option in control file;
		this information is not needed to create a new block-dir file.
		Made PRD_NAME, DATASET_ID and BLOCK_DIR_TYPE purely optional
		by assigning defaults:  DATASET_ID = ADCP-VM and
		BLOCK_DIR_TYPE = 0.
95/02/03 - JR - mc0.c and mc0.h:
		moved the #define statements (AS_IS, etc.) from mc0.c to mc0.h
		where it should belong (in conjunction with letting the load
		transect program use the convert_array_* and copy_byte routines).
95/02/16 - JR - mc0.c:
		modified copy_byte to allocate a temporary buffer in case
		the dest and src args are the same; this makes it possible
		to call the convert_array_* routines to perform conversion
		in place.
95/02/17 - PC - chprodid:
		new program for modifying the PRODUCER_ID in a CODAS database;
		during creation, this field is initialized from the producer
		definition file and may have not been properly set--hence this
		utility program.  Sample control file is codas3/cntfiles/chprodid.cnt.
95/05/08 - PC - asc_dump.c, blk_asc.c:
                fixed code to remove Turbo-C warnings about unused variables,
                missing prototypes, etc.
           JR - chprodid.c:
                fixed code to remove Turbo-C warnings about unused variables
                and missing cast