David A.	April 10 2002
    Initial checkin of all files.
    The system is fairly feature-complete and
    runs a number of test cases correctly.
    Currently runs only on Linux.

David A.	April 11 2002
    - Got things to compile on Solaris.
    - Pass in platform name, version number from Makefile
	(platform name comes from configure)

David A.        May 15 2002
    - Allow applications to have multiple files
        (e.g. scripts, libraries, pre- and post-processing programs).
        The app_version table now has an xml_doc field,
        which contains a list of <file_info> and <file_ref> elements.
        Note: the utility for adding applications (tools/add.C)
        still handles only single-file applications.
    - Changed IO_FILE_DESC to FILE_REF since it now represents
        an association of a file to workunit, result or application

    client
        app.C
        client_state.C,h
        cs_apps.C
        cs_scheduler.C
        main.C
        message.h (new)
        parse.C,h
        scheduler_reply.C,h
        types.C,h
        Makefile.in
    db
        db.h
        db_mysql.C
        schema.sql
    doc
        app.html (new)
        files.html
        index.html
        intro.html
        project.gif
        project.html
        project.png
        protocol.html
        result.html (new)
        work.html
    html_user
        db.inc
    sched
        handle_request.C
        server_types.C,h
    test
        test_uc.php
        init.inc
    tools
        add.C
David A.        May 23 2002
    - Change the scheduling server to reduce database accesses.
        There's now a shared-memory segment that contains
        1) the platform, app, and app_version tables in their entirety;
        2) a fixed-size set of results ready to be sent,
            and their corresponding workunit.
        This segment is initialized and maintained by a new program
        called the "feeder" (sched/feeder.C) that should run
        whenever the scheduling server is up.
        Note: the scheduler still needs to be converted to fast CGI
    - Added handy interfaces for dealing with shared memory and semaphores.
    - Changed to utilities and scripts used for testing so that all
        server-specific names (paths and URLs) come from environment
        variables instead of being hardwired in the code.
        You'll want to add these to your .tcshrc or whatever.
        See the doc/install.html for details.

    Files:
    TODO
    apps/
        Makefile.in
    client/
        app.C
    db/
        db.h
    doc/
        index.html
        install.html
        intro.html
        tools.html (removed)
        tools_other.html
        tools_work.html
        work.html
    lib/
        Makefile.in
        md5_file.C
        shmem.C,h (new)
        shmem_test.C (new)
        synch.C,h (new)
        synch_test.C (new)
    sched/
        feeder.C (new)
        Makefile.in
        handle_request.C,h
        main.C
        sched_shmem.C,h (new)
        server_types.C,h
    test/
        account.xml (deleted)
        account1.xml
        init.inc
        test_uc.php
    tools/
        add.C
        create_work.C