fix: use proper hostplatform variable, now host attributes really aren't empty on windows recipes.
<?xml version="1.0" encoding="ISO-8859-1"?>
<build xmlns="http://symbian.com/xml/build" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://symbian.com/xml/build ../../schema/build/2_0.xsd">
<!-- The build configurations built by default -->
<group name="default">
<groupRef ref="armv5"/>
<groupRef ref="winscw"/>
</group>
<group name="urel">
<aliasRef ref="armv5_urel"/>
<aliasRef ref="winscw_urel"/>
</group>
<group name="udeb">
<aliasRef ref="armv5_udeb"/>
<aliasRef ref="winscw_udeb"/>
</group>
<!-- all known configurations -->
<group name="all">
<groupRef ref="armv5"/>
<groupRef ref="armv7"/>
<groupRef ref="gccxml"/>
<groupRef ref="tools"/>
<groupRef ref="tools2"/>
<groupRef ref="winscw"/>
</group>
</build>