use JSONParserConfiguration of JSONTokener in JSONObject and JSONArray constructor instead of creating a new one

[Simulant87]

fixes #947

[stleary]

What problem does this code solve?
Resolves a bug where the wrong JSONParserConfiguration is used when creating a JSONArray or JSONObject with a JSONTokener instance.

Does the code still compile with Java6?
Yes

Risks
Low

Changes to the API?
No

Will this require a new release?
No

Should the documentation be updated?
No

Does it break the unit tests?
No. New unit tests were added.

Was any code refactored in this commit?
No

Review status
APPROVED

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