gEDA: New code for component library

[Patrick Bernaud <b-patrick-at-NOSPAMwanadoo_dot_fr>]

Hello all,

I have just checked in the CVS some new code to handle the component
library. It's a rewrite of the original code with simplification with
dynamic allocation in mind.

I have adapted the applications of the gEDA suite for this new code
(except gattrib, I did not know if you mind or not Stuart. Anyway, the
fix is simple: remove the call to s_clib_cache_free() in gattrib.c).

Note that s_clib_search_basename() now returns a list of match: you
can know if the component that is loaded is unique or not (though this
will require some work to be more user friendly than a line in the log
message).

I was thinking about making it possible to have one component library
per schematic. This way we could manage the addition of library
directories better for each page. I will have a look at that.

Please test and let me know of any problem. Of course, Ales, if you do
not like feel free to delete it.


Patrick