Fix expension of macros in pointers with default values.

For example :

in xsl decl widget_class(%name, *clsname="%nameWidget", match="widget[@type='%name']", mode="widget_class") alias template {
| class `text **clsname` extends Widget{
content;
| }
};

widget_class('Input');

gives now :

<xsl:template match="widget[@type='Input']" mode="widget_class">
<xsl:text>class </xsl:text>
<xsl:text>InputWidget</xsl:text>
<xsl:text> extends Widget{
</xsl:text>
<xsl:text>}
</xsl:text>
</xsl:template>

Without the fix, <xsl:text>InputWidget</xsl:text> would be <xsl:text>%nameWidget</xsl:text>

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include yslt.yml2

     2

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tstylesheet {

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    function stType {

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        param "type";

     6

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        choose {

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            when "$type='long'" > DINT

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            when "$type='short'" > INT

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        }

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    }

    12

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    function cType {

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        param "type";

    15

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        when "$type='long'" > int32_t

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        when "$type='short'" > int16_t

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    }

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}