include header files, man pages, etc

[Mandy Chung]

The JDK has the following types of files that are not covered in the
module-file format spec:

   1. include header files
   2. man pages

I haven't dealt with the man pages yet but I think the man pages should go
with the module of the tool it documents.

Dalibor,
    Can you help add the support of the new section for the include header
files?  The section for man pages can come later.

One other type of files is sample code.  I would imagine that sample code
would become several modules (not done in the modules build yet).
Samples typically include sources, readme, and possibly makefile or ant 
script.
It seems that there is no need to package samples in the module-file format.
Perhaps it makes sense shipping the samples only in native packaging format?

Thanks
Mandy