Re-add --enable-experimental to ./configure

This reverts commit 205b9a795ec4681ecfeadd2ad3b5f1eda6b25d36.
Add a node/ways handler

No tests yet. Uses the existing backend functions.
Add unit tests for node/ways call

.osm is based on the .osm for ways, and some of the test criteria are pulled from there
Add node/ways call to sample apache config
Merge pull request #80 from pnorman/parent_calls

Add additional "parent" API calls