02-10-89 - EF - bvfreq.c:
                revised, debugged, and checked;
                alternative method of calculation added.
06-29-90 - JR - *.c:
                switched to use "common.h" if alloc/exit functions are used
                main() => void main()
                BVFREQ.C
                removed #include from #else section of code--already included
-------------------------------------------------------------------------------
07-11-90 - JR - oceanexe.bat:
                now use -Dexe command line option on tcc/cc so there is no
                need to edit the ocean.h file to obtain executable versions
08-06-90 - JR - bvfreq.c:
                enclosed main() within compiler directive #ifdef EXE
              - oceanexe.bat:
                -Dexe should be -DEXE! coupled with problem with bvfreq.c
                this error caused the bvfreq.c main program to be used with
                all the other ocean routines' executable versions
08-31-90 - EF - bvfreq.c:
                removed error-checking bug in BVFREQ.
              - atg.c, svan.c: ?
09-09-91 - JR - bvfreq.c:
                inserted space in BVFI=-gi for porting to HPUX