[spec] Some thoughts on introduction chapter

[Dibyendu Majumdar]

Hi,

I am thinking aloud here - to get some feedback.

I would like to expand the introduction chapter by adding 
following sub topics:

1. Notation used
2. Basic Terms and definitions
3. Source code organization - some remarks about how D expects 
code to be organized.
4. Compilation and Linkage model - an overview of the phases of 
compilation, and how D code is linked at the system level.
5. Memory model
6. Object model (?)
7. Execution model - with brief overview of threading model, and 
garbage collection.

These would be short sections with pointers to later chapters for 
further reading etc.

This is all very tentative - but would like to get feedback.

Thanks and Regards
Dibyendu