CDF Changes Log, CDF V2.7.1.

V2.0.0   11-Feb-91  Release of CDF V2.0.
V2.1.0    7-Jun-91  Release of CDF V2.1.
V2.2.0   20-May-92  Release of CDF V2.2.
V2.3.0    1-Oct-92  Release of CDF V2.3.
V2.4.0   26-Jan-94  Release of CDF V2.4. 
V2.5.0   21-Dec-94  Release of CDF V2.5.
V2.6.0*  23-Feb-96  Alpha release of CDF V2.6.
V2.6.0#   5-Apr-96  Beta release of CDF V2.6.
V2.6.0&  13-Jun-96  Beta release of CDF V2.6.
V2.6.0$  17-Jun-96  Beta release of CDF V2.6.
V2.6.0@  15-Aug-96  Beta release of CDF V2.6.
V2.6.0   10-Oct-96  Release of CDF V2.6. 
V2.7.0   27-Sep-99  Release of CDF V2.7. 
V2.7.1   16-May-01  Add new ports: Solaris on PC, MacOS X and Linux on 
                       DEC/Alpha. 
                    Correct bugs in CDFDump program.
                    Correct and enhance CDF-Java APIs and Java Native 
                       Interface (JNI).
                    Add new Java-based tool programs for CDFEdit and CDFExport.
                    Add variable name checking in CDFconvert for compression 
                       option.
                    Add Cygwin port for win32 on PC. Create individual tool
                       programs for Windows using Cygwin libraries.
      	 05-Dec-01  Add a new set of APIs: CDFgetrVarsRecordData, 
                    CDFgetzVarsRecordData, CDFputrVarsRecordData and 
                    CDFputzVarsRecordData to allow a full single 
                    record read/write for a group of r/zVariables.  
         26-Jan-02  Correct a bug in cdfcmp.c for showing dimension size 
                    differences between two zVariables. 
         28-Jun-02  Add a new option in cdfcmp.c to allow tolerance checks
                    while comparing two unequal data values.
         22-Jul-02  Handle f77 Fortran for Cygwin. 
         25-Nov-02  Add 64-bit mode for Solaris/sparc64 for sparcv9. Also,
                    gcc for 64-bit is added.
V2.7.2   08-Apr-04  Change the way that current variable select is being handled.
                    Keep the current variable selected offset as a reference for 
                    any following variable selection. Originally, each time a 
                    selection of a variable or getting a variable's field data
                    will start the search for that variabale ALWAYS from 
                    the beginning of the variable list. It results too many
                    I/Os. 
         04-May-04  Corrected a bug that caused the f77 to fail under 64-bit
                    environemnt.
         07-Jan-05  Added a new data type, CDF_EPOCH16, to
                       accommodate more refined time resolution within a
                       second. A new set of functions, similar to those
                       of CDF_EPOCH data type, was added.
         25-Mar-05  Changed JNI and Java-CDF APIs to ensure proper operations
                    within the multiple-threaded environment.
         11-Jul-05  Added MingW port for PC.