Unified error codes.

Knot.files

src/Makefile.am

src/common/errcode.c

src/common/errcode.h

src/common/errors.c

src/common/log.c

src/common/log.h

src/common/slab/alloc-common.h

src/common/slab/slab.c

src/knot/common.h

src/knot/conf/conf.c

src/knot/conf/conf.h

src/knot/conf/logconf.c

src/knot/conf/logconf.h

src/knot/ctl/knotc_main.c

src/knot/ctl/process.c

src/knot/ctl/process.h

src/knot/main.c

src/knot/other/error.c

src/knot/other/error.h