Add missing argument placeholders to several command-line tools
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girepository: Provide placeholders for --includedir
If we don't do this, the --help text is formatted as though the option did not expect an argument.
This does not introduce new translated strings: DIRECTORY was already translated.
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girepository: Provide placeholders for positional parameters
Otherwise, correct invocation isn't clear from the --help output.
This does not introduce new translated strings: FILE was already translated.
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gdbus: Add command-line placeholder for ADDRESS
If we don't do this, the --help text is formatted as though the option did not expect an argument.
This introduces a new translated string, but it is developer-oriented, so a missing translation is not particularly bad.
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glib-compile-resources: Provide placeholders for options with an argument
If we don't do this, the --help text is formatted as though the option did not expect an argument.
IDENTIFIER is a new translated string, but it is developer-oriented, so a missing translation is not particularly bad. COMMAND is already present in translations.