[M] Change in libosmocore[master]: logging: Make struct log_context and struct log_target private

Attention is currently required from: pespin.

fixeria has posted comments on this change by pespin. ( https://gerrit.osmocom.org/c/libosmocore/+/41891?usp=email )

Change subject: logging: Make struct log_context and struct log_target private ......................................................................

Patch Set 1:

(1 comment)

Patchset:

PS1: I assume old code (still referencing this struct and its members) will no longer compile against libosmocore after this patch? This is against the policy of "old code should compile against recent libraries".