Give the addfile command variable argument support.

This branch includes several improvements.

• Gives the addfile command the ability to add multiple files at the same time, using multiple arguments
• Adds a check to see if the file was already added during the adding of multiple files, so that addfile a a a a a a a a a (assuming the file a doesn't exist) doesn't lag the crap out of your SRB2
  • Adds a warning if the file is skipped due to being already added during the adding of multiple files
• Updates the help message to mention Luas and PK3s, and changes the description to "load mods"

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• 42f72667 - Update help message to mention supported file extensions, and change the…

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• 130b77fb - Update help message to mention supported file extensions, and change the…

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I know you already added it, but you don't have to worry about USE_KART. In fact those macros should be removed. We (Kart Krew) are removing the .kart extension in the future.

Were people able to make their mods .kart files and they would show up in the addons menu?

another reason to continue seperating my commits

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• d5848e78 - Update help message to mention supported file extensions, and change the…

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• 87a5e1d3 - Futureproof against strict buildbots.

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merged

mentioned in commit 58464771