Changes form 2.3.0 to 2.3.99.1

- New OSVF Parser

- New CPE Parser/Emitter

- Lots of code cleanup and simplification

- Add support for system triggers (triggers in /usr/share/pkg/triggers)

- pkg check now respects -r (rootdir)

- relax ABI checking

- Lots of improvements and bugs fixes regaring BACKUP_LIBRARIES features

- Integrate BACKUP_LIBRARIES in the solver

- Add vital flag to the list of flag which we need to consider for package reinstallation

- tack uname, gname, mtime, permissions and fflags in the db and in the manifest

  instead of relying on the tar informations. which gives us pkg check -m to check for

  for metadata changes.

- METALOG: add entries for intermediate directories

- better 404 reporting

- fix return code for pkg upgrade -n

- new pkg sets alias example in default pkg.conf

- new DEBUG_SCHEDULER_DOT_FILE option to generate a graphviz DOT format for the job graph

- loosen ordering for upgrade jobs (reduces a lot the number of split upgrades and speed up

  the scheduler on setup with large number of packages.)

set min_ver 99

set dev_ver 1