Change Details

* Set up the connection between Cantor and qalc * Use streams for I/O * Parse the output returned by qalc

* Set up the connection between Cantor and qalc * Use streams for I/O * Parse the output returned by qalc * Segregate API dependent parts fromqalc * Use expression queue and command queue for commands that are to be processed by qalc

* Set up the connection between Cantor and qalc * Use streams for I/O * Parse the output returned by qalc * Segregate API dependent parts fromqalc * Use expression queue and command queue for commands that are to be processed by qalc