Rewrote Array2dFile class to make reads and writes atomic. No disk files are kept open.
Rewrote Array2dFileLabel class to make members private, added access routines
Removed timedate.cpp in favor of standard C library time/date functions
- Renamed ctrec to pjrec
+ Renamed ctrec to pjrec, sample-ctrec.sh to sample-ctsim
+ Added signature tag and creation date/time to projection files
1.9.7 - 6/25/2000
Standardized string option processing by classes. All classes use character strings