#3 Add a method to set ignoreCase

[David Thomson Berry]

I created an element using XMLElement e = new XMLElement()
and found no way to set the ignoreCase variable to
false after that. Would be nice to add a method such
as this below.

/**
* Changes the setting of the ignoreCase variable
*
* @param ignoreCase
*/
public void setIgnoreCase(boolean ignoreCase)
{
this.ignoreCase = ignoreCase;
}

Possibly the same is true of skipLeadingWhiteSpace.