make certain performance tests

[srguiwiz]

To stay on track for good performance for large documents this performance testing should be done, reported, and considered:

• Make documents with 10, 100, 1000, 10000, 100000 elements.
• Time run of Adj.
• Make documents so they only use Adj commands issued as elements. I.e. they should not contain any command proper as attribute.
• Collect (to compare) time run as SVG document versus SVG inline in an HTML document.
• Collect (to compare) time run with Adj as is versus a version of Adj that doesn't look (iterate every SVG element, parse) for commands as attributes. Such version of Adj should be made by commenting out code.