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>

# Files to include in the source package - for the case
# the project directory is are not in a VCS.
include yml2c
include yml2proc
include yml2/*.ysl2
include yml2/*.yml2

include Makefile
include *.yhtml2
include format.css
include gpl-2.0.txt

include samples/*
include vim/syntax/*

exclude .hgtags
exclude .hgignore