Start to consume orders; Change tables to use Symbol instead of ID.

CHANGED: MARKETDEFN.CS to use Symbol instead of ID.
CHANGED: MARKETDEFNDAL.CS to use Symbol instead of ID.
CHANGED: MARKETMANAGER.CS to use isRunning for read and write of flag.
CHANGED: MARKETMANAGER.CS; Function names more specific.
CHANGED: ORDER.CS; UInt32 types to Int64 to allow easy import.
CHANGED: ORDERQINDAL.CS; Null handling much more relaxed during import.
CHANGED: Table create scripts to use Symbol instead of ID in Market tables.
ADDED: MARKETMANAGER.CS; ConsumeQueuedOrder() and ProcessInboundOrder()
ADDED: MARKETDEFN.CS; PriceProtocol Enum for bad price handling.
ADDED: MARKET.CS; Constant NOLASTTRADEDPX to shortcut validity checks.
ADDED: ORDER.CS; Constants for common text strings.
ADDED: ORDER.CS; Tick price massaging functions.
ADDED: ORDER.CS; is...() type functions for order examination.
ADDED: ORDER.CS; Validation functions.