* auth-source.el (auth-source-search): Clarify :create's meaning.
Copyright-paperwork-exempt: yes
Typically the :secret property, if present, contains a password.
Common search keys are :max, :host, :port, and :user. In
-addition, :create specifies how tokens will be or created.
+addition, :create specifies if and how tokens will be created.
Finally, :type can specify which backend types you want to check.
A string value is always matched literally. A symbol is matched