July 30, 1995, v2.00.beta:
        0. the first release and beta version.

Sep. 11, 1995, v2.10:
        1. Porting to AIX 3.x and 4.x, by writing dlopen(),
           dlsym(), dlclose() interface.
        2. Tested on SCO OpenServer 5.x
        3. Awared of that, unlike s700/s800, exported function
           symbols on HP9000 s300/s400 will be prepended with
           a '_' prefix by compiler(and this '_' prefix is not
           automatically handled by shl_findsym()). Now, it works
           fine on s300/s400.
        4. Support driver ODBC call tracing.

Oct. 12, 1995, v2.11:
        5. Driver's SQLNumResultCols() will automatically be
           invoked in driver manager's SQLExecute(),
           SQLExecDirect() and SQLParamData() after successfully
           (i.e. return SQL_SUCCESS or SQL_SUCCESS_WITH_INFO )
           calling of their correspondent driver functions. This
           simplifies the state tracing/checking of the driver
           manager a lot and allows store procedures to return
           result set and also make iODBC driver manager work
           properly with SELECT INTO statements which actually
           don't return result sets.
        6. Memory leaks are cleared.
        7. Two bugs in dld.c for AIX are fixed
        8. A bug of setting tracing option is fixed.
        9. The driver will not be unloaded by SQLDisconnect()
           but by SQLFreeConnect() or next SQLConnect()/
           SQLDriverConnect()/SQLBrowsConnect() on a different
           driver. This will save driver's loading time if it
           has been used by a previous connection(even there
           is no active connection on this driver).
        10.Another three platforms are supported:
                FreeBSD                 2.x
                Concurrent Max/OS SVR4  1.x
                DG/UX                   5.x
        11.autoconfig and build -- shell scripts to help modifying
           Config.mk and building iodbc driver manager

Nov. 12, 1995, v2.12
        12.I realized that a driver manager doesn't aware of
           difference between a C5 (i.e. hstmt) and a C6
           (i.e. transaction) states.
        13.The link flags "-lc" has been droped from Linux ELF
           section of Config.mk to fix a segment fault problem.
           Now, it works fine on Slackware 2.3 and Red Hat 2.0
           (kernel version are 1.2.xx and 1.3.xx respectively).
        14.On FreeBSD 2.x, dlsym() doesn't handle the '_' prefix
           prepended to an exportting function symbol by compiler.
           So, CLI_NAME_PREFIX needs to be defined as "_SQL" for
           FreeBSD 2.x.
        15.Some files are renamed
                dld.c   -> dlf.c
                dld.h   -> dlf.h
                confg.h -> config.h
        16. Fix a bug on setting tracing options.
