Add LRU cache of rendered bitmaps, to improve redraw performance in the absence of graphics HW support for OpenVG
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<!DOCTYPE SystemDefinition SYSTEM "systemDefinition.dtd"[
<!ENTITY layer_real_source_path "\sf\mw\uiresources">
<!ENTITY layer_name "uiresources">
<!ENTITY layer_file SYSTEM "systemDefinitionLayer.xml">
<!ENTITY targetDefinition_file SYSTEM "/epoc32/tools/systemDefinition/targetDefinition.xml">
<!ENTITY defaultbuild_file SYSTEM "/epoc32/tools/systemDefinition/default_build.xml">
<!ENTITY defaultclean_file SYSTEM "/epoc32/tools/systemDefinition/default_clean.xml">
]>
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<systemModel>
&layer_file;
</systemModel>
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<configuration name="build" description="build layer" filter="">
<layerRef layerName="&layer_name;"/>
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</configuration>
<configuration name="clean" description="clean layer" filter="">
<layerRef layerName="&layer_name;"/>
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</SystemDefinition>