The wasm is using the ThorVG output starting whith "SVG:" to show
unsupported element and attribute of svg file.
This patch updates wasm_build.sh to make ThorVG prints log,
and removes build errors.
- Following commit needs to include 'algorithm'
1ed6113 common sw_engine: code refactoring & stabilizing.
- Following commit needs to include 'string'
5481633 svg_loader XmlParser: Print unsupported elements, ...