Documentation of the Configuration Options

[Sebastian Huber]

Hello,

I finished the work to reorganize the configuration options:

https://docs.rtems.org/branches/master/c-user/config/index.html

My next is now to parse the documentation source files and generate 
specification items for the configuration options and groups. This is 
similar to the glossary of terms:

https://git.rtems.org/sebh/rtems-qual.git/tree/spec/glos/term

Then I will write a script which reads the specification items and 
generates the documentation sources. I would like to use new templates 
for the options:

https://devel.rtems.org/ticket/3900

https://devel.rtems.org/ticket/3901

I would like to generate also a Doxygen header for the options. This 
depends on:

https://devel.rtems.org/ticket/3899