[lucy-dev] C API documentation in POD format

[Nick Wellnhofer]

Lucifers,

I'd like to add the Clownfish C API documentation to our generated Perl PODs, 
so developers of Perl extensions can find all the docs in one place. I'm 
thinking of creating POD files like Clownfish/Docs/C/VArray.pod for every 
Clownfish class. There are some classes like LockFreeRegistry that shouldn't 
be exposed, maybe by marking them private. But we can deal with that later.

For Lucy extension writers, it would also be useful to have the C API 
documented in POD format. But I don't want to clutter the documentation with 
another 150 files. Maybe we could organize the Lucy C API docs by 
subdirectory, like Lucy/Docs/C/Search.pod.

Nick