FIX: new fields are added

Signed-off-by: Marat Stanichenko <mstanichenko@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
FAST: name and id attributes introduced

It's quite usual that FAST fields have name and id
attributes (e.g. if FIX messages are transferred via FAST).
Libtrading should support these attributes.

Signed-off-by: Marat Stanichenko <mstanichenko@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
FAST: message copying functionality is added

Signed-off-by: Marat Stanichenko <mstanichenko@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>