Update SDPT3solve.m so that it does not end with quit in order to add other commands.
Update SDPT3solve.m so that it does not end with quit in order to add other commands.

Originally, SDPT3solve.m ends with quit but to run from octave, we need to add some commands there,
thus I updated to replace quit to end.

TrishGillett/pysdpt3glue,TrishGillett/pysdpt3glue,discardthree/PySDPT3glue,TrishGillett/pysdpt3glue,discardthree/PySDPT3glue