add functions to get Legacy and Vault account data

functions to access Legacy account data

• islegacyaccount({<char name or account id>}) => bool
• getlegacyporttime({<char name or account id>}) => int: timestamp
• getlegacytuttime({<char name or account id>}) => int: timestamp
• getlegacylevel({<char name or account id>}) => int: level
• getlegacybosspoints({<char name or account id>}) => int: boss points

functions to access Legacy items:

• getlegacyinventory(<integer array: item>, <integer array: qty>{, <char name or account id>}) => int: size
• getlegacystorage(<integer array: item>, <integer array: qty>{, <char name or account id>}) => int: size

Legacy debug functions:

• setfakelegacyaccount() => bool: success

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constant to check whether the server is using Vault:

• SERVER_USES_VAULT => bool

functions to access vault account data

• getvaultid({<char name or account id>}) => int: vault id

functions to access vault-bound variables

• getvaultvar(<variable>{, <char name or account id>}) => reference: vault variable
• setvaultvar(<variable>, <value>{, <char name or account id>}) => reference: vault variable

// setting an integer variable:
setvaultvar(FOOBAR, 69);

// setting a string variable:
setvaultvar(FOOBAR$, "baz");