Code reorganization: Split into modules/shared libraries about koreader-base

[houqp]

This is a much more cleaner than before! Great job 👍

[houqp]

BTW, that also makes koreader a lot easier to port to other platform because we can load different input and output module on demand :)

[houqp]

@hwhw , is the dynamic loading already implemented in your branch? I cannot find it in the source :(

[hwhw]

Sorry, not yet. I spent the last 1.5 weeks on vacation, will see that I
upload that soon. ~2 days, I guess. But I'll weed through this starting
today, so I might be faster...

[hwhw]

I've created a current version here:
https://github.com/hwhw/koreader-base/tree/dynlib

I still need to introduce Kobo-related pre-configuration for the
toolchain (armhf settings), -jN autoconfig and ccache.

Next step then is to adapt KPV and Koreader to the new layout.

When that is done, I will start to migrate some parts over to use
LuaJITs FFI - as an example first. I think stuff like kobolight.c,
util.c are easy targets. Freetype font rendering will also benefit
greatly from speed increase. And then there's the input handling, I
guess we can get much faster reaction there. But that is FFI matter, I
concentrate on the external library stuff first.

[hwhw]

OK, I've added the missing Kobo-related parts, -jN autoconfig and ccache. Still left is the integration with the actual applications. Plus one or another little oversight that is probably still left.

[hwhw]

It does run the reader now. Looks good so far. Would still need integration into the builds of koreader and KPV, but I think I've fleshed out the remaining rough edges.

[houqp]

awesome! I will work on it this weekend and hopefully to convert one or two modules into pure lua module with FFI

[houqp]

just for reminder, we should pull the jit profiler from koreader/koreader#204 to koreader-base after reorganization is done.

another todo:
merge with changes: koreader/koreader#201 (comment)

[hwhw]

This has been done!