Instantiate a new LoginContext object with a name and a CallbackHandler object.

Parameters:

name the name used as the index into the Configuration.

callbackHandler the CallbackHandler object used by LoginModules to communicate with the user.

Exceptions:

LoginException if the caller-specified name does not appear in the Configuration and there is no Configuration entry for "other", or if the caller-specified callbackHandler is null.

SecurityException if a SecurityManager is set and the caller does not have AuthPermission("createLoginContext.name"), or if a configuration entry for name does not exist and the caller does not additionally have AuthPermission("createLoginContext.other")

`name`		the name used as the index into the `Configuration`.
`callbackHandler`		the `CallbackHandler` object used by LoginModules to communicate with the user.

`LoginException`		if the caller-specified `name` does not appear in the `Configuration` and there is no `Configuration` entry for "other", or if the caller-specified `callbackHandler` is `null`.
`SecurityException`		if a SecurityManager is set and the caller does not have AuthPermission("createLoginContext.name"), or if a configuration entry for name does not exist and the caller does not additionally have AuthPermission("createLoginContext.other")