If a package (i.e. a collection of units that work together) is being compiled, then this section is
used to keep package information. The following information can be stored:
     
- 
name 
 - The name of the package. When installing it under the package directory, this name
     will be used to create a directory (unless it is overridden by one of the installation
     options).
     
 - 
version 
 - The version of this package.
     
 - 
main 
 - If the package is part of another package, this key can be specified to indicate which
     package it is part of.