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  • Brad King's avatar
    Simplify CMake per-source license notices · 86578ecc
    Brad King authored
    Per-source copyright/license notice headers that spell out copyright holder
    names and years are hard to maintain and often out-of-date or plain wrong.
    Precise contributor information is already maintained automatically by the
    version control tool.  Ultimately it is the receiver of a file who is
    responsible for determining its licensing status, and per-source notices are
    merely a convenience.  Therefore it is simpler and more accurate for
    each source to have a generic notice of the license name and references to
    more detailed information on copyright holders and full license terms.
    
    Our `Copyright.txt` file now contains a list of Contributors whose names
    appeared source-level copyright notices.  It also references version control
    history for more precise information.  Therefore we no longer need to spell
    out the list of Contributors in each source file notice.
    
    Replace CMake per-source copyright/license notice headers with a short
    description of the license and links to `Copyright.txt` and online information
    available from "https://cmake.org/licensing".  The online URL also handles
    cases of modules being copied out of our source into other projects, so we
    can drop our notices about replacing links with full license text.
    
    Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
    of the replacements mechanically.  Manually fix up shebang lines and trailing
    newlines in a few files.  Manually update the notices in a few files that the
    script does not handle.
    86578ecc