Update sysdefdowngrade.xsl to preserve v3.0.0 proFile and qmakeArgs during 2.0.1 transform.
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:s="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:exslt="http://exslt.org/common"
exclude-result-prefixes="s exslt" >
<xsl:import href="css-module.xsl"/>
<xsl:template match="comment()" mode="unstyle"><xsl:copy-of select="."/></xsl:template>
<xsl:template match="/*">
<xsl:apply-templates select="." mode="unstyle"/>
</xsl:template>
</xsl:stylesheet>