[Bug 2456] loadXML gives an exception. Fixed by Sean Bright. Originally,...

[Bug 2456] loadXML gives an exception.  Fixed by Sean Bright.  Originally, UTF-16 was set as the encoding
which caused Xerces to look for a byte order mark that would not be present
in a string (but would in a file).  Setting UTF-16LE explicitly sets the byte order.


git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@173159 13f79535-47bb-0310-9956-ffa450edef68