[feature model] Format of text section - repoinit and others

[Robert Munteanu]

Hi,

While working some more with the feature model I realized that text
sections can not contain newlines - this is a limitation of JSON.

This makes it very hard to work with repoinit sections. I end up with
(literally) 10k characters on a single line. Diffs are going to be
interesting with such formats :-)

I think it would help adoption a lot if we have a more friendly format
for text entries.

One option would be to have lines stored as an array, e.g.

  "repoinit:TEXT|false": [
        "create path (sling:Folder) /libs",
        "create path (sling:Folder) /apps",
        "create path (sling:Folder) /tmp"
  ]

Not that nice, but it keeps the file self-contained.

Another option would be to keep a secondary text file around and 
introduce a new field type, file:

  "repoinit:FILE": "./repoinit.txt"

This has the disadvantage of no longer having the configuration be
self-contained, but on the other hand it's a text file, which the
repoinit format was built for.

The third option - for the sake of being complete - is to have a
structured JSON format for repoint, but IMO that's overkill. Something
like:

  "repoinit": {
        "paths": [
                "/libs (sling:Folder)",
                "/apps (sling:Folder)",
                "/tmp (sling:Folder)"
        ]
   }

Thoughts? I think the feature model approach is great, but we need to
improve on the usability of text sections.

Thanks,

Robert