backlog: update Manual typedef generation

- rename all instances of pod to objects to avoid confusion
om: add absolute path support

- rename full path to absolute path in file, to make it consistent
  with C++ models
- engine: add path calculation logic to OM backend, copying C++
  locator's logic.
- drill through OM's classes to transport paths all the way to the
  formatters (workflow, formatter factory, etc.)
- use asserter in main header file formatter tests
- utility: minor tweaks to assertions for strings
- sml: make header guards toggleable via meta-data parameters and update
  all affected classes such as tagger, OM formatters etc.