Unexpire Account
Unexpires an account.
Signature: def unexpireacct(cinfo)
Parameters:
cinfo['acctid'] - The account that should be unexpired
Return Value:
ACSuccess 0
ACUnknownError 1
ACOperationNotSupported 2
ACInvalidUser 7
Remarks:
If the account is already not expired before doing any modifications, the function should return ACSuccess.