Accept --help & --version as aliases to -help & -version
Like other X.Org programs, does what the user wants but doesn't document that the double-dash style is accepted since it doesn't fit with our normal single-dash long option name style.
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Like other X.Org programs, does what the user wants but doesn't document that the double-dash style is accepted since it doesn't fit with our normal single-dash long option name style.