Fix _sx_assert() to panic() rather than printf() when an assertion fails and ignore assertions if we have already paniced.
Fix _sx_assert() to panic() rather than printf() when an assertion fails
and ignore assertions if we have already paniced.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase