utility: bump log sizes to 20 megs
agile: backlog allow manual overrides to facets
improve logging around simple names

- fix a few instances we missed in the previous string converter
  refactorings.
sml: use a more predictable syntax for qnames as strings

The previous dot notation was not working on a number of cases such as
missing model name, etc. Until we have good solid test cases around
it, replace this with an angle-brackets notation, e.g. <a><b>.
cpp: improve code around includes generation

- rename path spec details builder back to includes builder. make the
interface more sensible, by generating just the includes for a given
qname rather than the whole model.
- workflow now creates a container of includes builders first before
performing path details generation.
cpp: rename identifier_name_builder to name_builder
cpp: get relative path to work correctly

- dump the settings bundles to the log
- setup default values for header files when generating c++ settings
agile: initial analysis for include generation