org.jmacs 1.18

• ~.ISpi: In the case where a lock object is not supplied, the caller may now access the driver subsequently provided the lock on the driver itself is acquired first.
• ~.pd.DiClient: separate lock-object dispensed with. The caller is now required to acquire the lock on the driver/container itself before accessing it subsequently.
• IDevice: executeCmd(), getStatus() now return Object (instead of Serializable)
• IStatusEtc: status() now returns Object (instead of Serializable)
• StatusPlusProgInfo: status() now returns Object (instead of Serializable)

• ~.IDiClient: jdoc now states that 'thead-safety may not be assumed' and that 'the result of calling methods out of turn is undefined'; also, 'the socket that sends/receives' becomes 'the socket that will be created to send/receive'

• ~.IDiClient: connect() methods now only throw InterruptedException as a checked exception: any exception deemed to be due to a temporary network or server problem will be caught (enabling jmacs to try again later'); any exception deemed to be due to the caller---server hostname/name properties causing MalformedURLExceptions, bad device-interface definition---will be wrapped in a RuntimeException

• ~.ISpi: newDiClient() becomes createDiClient()