[gluon] Review Request: metainfo branch

[Dan Leinir Turthra Jensen <admin@xxxxxxxxx>]

Hi guys!

  Right, i have now implemented the metainfo system which i mentioned last 
week on here, and done so in the branch metainfo. Please review the changes in 
this branch, as i would like to merge them into master at some point soon (i 
have some code in the behavior tree components being developed for our MSc 
which use it, meaning i can't easily switch away from the metainfo branch 
while developing these components).

  A round-up of the changes to the framework follows:

* A new class (GluonCore::MetaInfo) which contains property ranges and steps
  for any arbitrary number of properties. The class is heavily documented:
  http://gitorious.net/gluon/gluon/blobs/metainfo/core/metainfo.h
* Two new functions on GluonCore::GluonObject:
  GluonCore::MetaInfo* metaInfo()
  bool hasMetaInfo() const
  metaInfo() returns the current MetaInfo for the object, or creates one if
  one does not already exist. hasMetaInfo() allows for checking this without
  calling metaInfo()
* SoundEmitter component has two new properties (volume and pitch) of which
  one has a range (pitch, from 0.5 to 2.0 as defined by GluonAudio::Sound)

  Furthermore, unrelated changes in the branch (due to mishaps with not 
switching branches, my fault, but they're there):

* Woopsie on the signal connection in PropertyWidgetContainer
* GluonObject naming issues (when adding new objects)
* The QReal PWI is now used for float properties as well (the two were
  copies of the same code, literally, with the class name and supported
  data types changed. This is why the code for supporting multiple data
  types is there to start with ;) )

-- 
...Dan // Leinir..
http://leinir.dk/

                          Co-
                            existence
                          or no
                            existence

                          - Piet Hein

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Gluon is a high-level game development library for the KDE desktop enviornment.
http://gluon.tuxfamily.org/
http://gitorious.org/gluon