add regtest/runtests.sh

regtest/runtests.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+cd "$(dirname "$0")"
+allfailed=0
+for i in rs*.bash; do
+   ( DVDISASTER_SCSI_SIMULATED_NODELAY=1 ./$i ); ret=$?
+   allfailed=$((allfailed + ret))
+done
+echo Failed $allfailed tests
+exit $allfailed