Moved GR includes below all other includes to avoid trampling other GR configs.
config: added HORD_DATA_ENDIAN to configure endianness globally.
Data::Field: defined copy ctor.
Data::Record: defined sized ctor and defaulted copy ctor.
Cmd/Defs: added static assertions to ensure standard type limit conformity.
Cmd/Generic: doc tidy.
doc: added missing description for put_prefix in Log::acquire().
Cmd: renamed make funcs by stage, moved into command-wise namespaces.