Allow the addition of multiple messages to the exceptions generated by CM
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                 Key: MATH-542
                 URL: https://issues.apache.org/jira/browse/MATH-542
             Project: Commons Math
          Issue Type: New Feature
            Reporter: Gilles
            Assignee: Gilles
            Priority: Minor
             Fix For: 3.0


Borrowing on the idea of "ExceptionContext" implemented in [Lang], 
"MathRuntimeException" (base class of all exceptions generated from CM) will be 
enhanced so that an unlimited number of (localized) messages can be added to an 
exception object.

The "MathThrowable" interface (implemented by "MathRuntimeException") will 
contain the following new method:
{code}
/**
  * Sets a message.
  *
  * @param pattern Message pattern.
  * @param arguments Values for replacing the placeholders in the message
  * pattern.
  */
  public void addMessage(Localizable pattern,
                         Object ... arguments);
{code}


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