Fix NASDAQ OMX OrderQty(38) type

Signed-off-by: Pekka Enberg <penberg@kernel.org>
Fix OrderCapacity(528) value types for FIX 4.3

Signed-off-by: Pekka Enberg <penberg@kernel.org>
Merge pull request #84 from valotrading/fixes/nasdaqomx

NASDAQ OMX dialect fixes