[x3d-public] Please fix X3dToJson.xslt to work with Saxon-CE, Saxon-Js and xslt3

[John Carlson]

Here's the code that gets execute in the X3dToJson.xslt stylesheet.  Is 
there some way to fix it with a flag?

<xsl:otherwise>

                             <!-- Note that this error condition occurs 
if DTD default attribute values are suppressed before invocation -->
<xsl:text>IllegalChildNodeFieldNameNotFound</xsl:text>
                             <xsl:message>
                                 <xsl:text>Error: 
IllegalChildNodeFieldNameNotFound no containerField or field name found 
for the X3D JSON object. Check spelling of node.</xsl:text>
<xsl:text>
</xsl:text>
                                 <xsl:text> $elementName=</xsl:text>
                                 <xsl:value-of select="$elementName"/>
                                 <xsl:if test="(string-length(@DEF) > 0)">
                                         <xsl:text>, DEF=</xsl:text>
                                         <xsl:value-of select="@DEF"/>
                                 </xsl:if>
                                 <xsl:if test="(string-length(@USE) > 0)">
                                         <xsl:text>, USE=</xsl:text>
                                         <xsl:value-of select="@USE"/>
                                 </xsl:if>
                                 <xsl:text>, $parentName=</xsl:text>
                                 <xsl:value-of select="$parentName"/>
<xsl:text>
</xsl:text>
                                 <xsl:choose>
                                         <xsl:when test="not($isTestScene)">
                                                 <xsl:text> Please 
report this error to x3d-public at web3d.org - thanks for your help 
improving X3D Quality Assurance (QA).</xsl:text>
                                         </xsl:when>
                                         <xsl:when 
test="(string-length(//meta[(@name='title')]/@content) > 0)">
                                                 <xsl:text> </xsl:text>
                                                 <xsl:value-of 
select="//meta[(@name='title')]/@content"/>
                                                 <xsl:text> is a test 
scene supporting X3D Quality Assurance (QA).</xsl:text>
                                         </xsl:when>
                                 </xsl:choose>
                             </xsl:message>
                         </xsl:otherwise>