Allow specification of 'time' column value as number in CQL query.

The 'time' cql type is internally stored and sent over the protocol as an 8-byte long value representing nanoseconds since midnight.

When specifying a time column value as a number in a simple statement,, C* currently responds with:

InvalidRequest: code=2200 [Invalid query] message="Invalid INTEGER constant (42000000000) for "time" of type time"

Instead one must provide this value as a string (i.e. '42000000000') or use an HH.MM.SS.sssssssss format (i.e. '00:00:42.000000000'). It would be nice if it supported unquoted numbers as well.

Example:

cqlsh:simple> CREATE TABLE timeentity (id varchar PRIMARY KEY, time time);

# Doesn't work
cqlsh:simple> INSERT into timeentity (id, time) values ('1', 42000000000);

InvalidRequest: code=2200 [Invalid query] message="Invalid INTEGER constant (42000000000) for "time" of type time"

# Works
cqlsh:simple> INSERT into timeentity (id, time) values ('1', '42000000000');

When using prepared statements or simple statements with parameters, one could provide a long value, depending on the driver implementation. I.E. the java driver has setTime(int index, long v).