Lavoisier

Replace module straxpath with new module xpath-absolute

This new module improves performance (same memory consumption, CPU usage reduced):

• create DOM objects only for potentially selected nodes and their ancestors.
• evaluate XPath predicates only for nodes that match depth, namespace and name of potentially selected nodes.
• attribute, text and comment nodes are tested only if their parent element matches the parent of potentially selected nodes.

It also improves reliability: XPath expressions that can not be reliably evaluated in streaming mode are evaluated on a full DOM tree instead.

It supports XML comments.

It has no dependency on any Lavoisier module.