We need the following patch of mine:

   http://git.ozlabs.org/?p=ccan;a=commitdiff;h=b97c7f0841f5173a07a2571f2c99f944d8405a90

Else it won't compile with C++. This needs my patch to CCAN to work.
Patch description and problem details are here:

http://git.ozlabs.org/?p=ccan;a=commitdiff;h=39b46a02b719

Just an update to latest CCAN - there is actually no changes to modules
that we use (tap, array_size, minmax, bitmap, build_assert)

Just update to latest CCAN for it to be a fresh one.

Just update to latest CCAN for it to be a fresh one.

Throught the modules we use there are no real updates, just a fix for
one warning in array_size.

We need this commit:

    http://git.ozlabs.org/?p=ccan;a=commitdiff;h=c38e11b508e52fb2921e67d1123b05d9bef90fd2

or else we segfault on really big arrays allocation instead of getting
ENOMEM and reporting it as MemoryError to python.

Unfortunately in CCAN they made separation of list_head into list_head &
list_node (for better type safety I suppose), but that leads e.g. to
inablility to insert element in the middle of the list.

We take the code from util-linux.git (v2.25-165-g9138d6f)[1] which claims
LGPL license for it, with which we are fine.

[1] https://git.kernel.org/cgit/utils/util-linux/util-linux.git/tree/include/list.h?id=v2.25-165-g9138d6f

CCAN[1] is a "Comprehensive C Archive Network" - a collection of useful
C libraries to use.

Wendelin.core will be a C project in big part, so having CCAN at hand is
useful.

We hook CCAN as git submodule, without copying it into git repo. Later
on making source tarball distribution, the code will be injected into
generated tarball, so there will be no additional dependencies to
download something from network for end users.

[1] http://ccodearchive.net/