87dcee0c0c
This mainly touches extern libraries and few debug-only places in intern. Some summary: - External libraries are not strict at all about missing declarations, so we can rather safely remove such warning together with other strict flags. - Bullet has some static functions which are not used. Those were commented out. - Carve now has some unused debug-only functions commented out as well. While we're on the way of getting rid of Carve, it makes sense to make things a bit cleaner for the time being. - In LZMA we have some parts disabled which gives some set but unused variables which is rather correct. - Elbeem had quite some variables set and never used because their usage is inside of debug-only code which is commented out. Note about patching upstream libraries: surely one might say that we have to make local patchset against this, but own experience says it only gives extra work trying to merge such tweaks to a new upstream version and usually it's just faster to re-apply such fixes again after bundling new upstream library.