Split key_def.h/.cc

src/CMakeLists.txt

src/box/CMakeLists.txt

src/box/alter.cc

src/box/authentication.cc

src/box/engine.cc

src/box/field_def.c

src/box/field_def.h

src/box/func.c

src/box/func.h

src/box/func_def.c

src/box/func_def.h

src/box/index.h

src/box/index_def.c

src/box/index_def.h

src/box/key_def.cc

src/box/key_def.h

src/box/opt_def.c

src/box/opt_def.h

src/box/schema.cc

src/box/schema.h