catchup merge - removed my foundation model changes from merge and will re-apply later (merge conflicts not worth resolving due to model order changing).

foundation config - changed to use 'sf.os.compile.iterate' to workaround problems with raptor with single model.

catchup merge

Removing GT charconv components that get overwritten in a standard S60 build. Note that this means that some tools are older.

Removed helix repository as it is not ready yet in mercurial.

Created layers for OS Tools and Tools, and added appropriate packages to these.

Added content to indicate that several of the tools components do actually contribute to the system model.

Moved conntools into its real layer - "app".

Removed top-bit-set characters from the middle of "Implementation". Moved a few of the attributes in the tags, so that they follow a consistent order.

Added helix package. Package is empty at the moment, but it is in the system model (with no units to build).

Sorted MW layer packages.

Sorted packages into order in the app layer.

Sorted packages in "os" layer into correct (alphabetical) order. (Packages in this layer in the model, but not in this layer in the repository layout, are left at the end.)

Put layers into correct (aphabetical) order.