exception handling related changes: * changed blockPredecessors to list of Instructions, instead of Blocks * removed explicit predecessor management in BlockBegin, now using predecessors from Graph structure * replaced generated LIR exception entries with exception dispatch chains in IR * added Unwind and ExceptionDispatch instructions * removed ExceptionEntry flag in BlockBegin and all code depending on it * removed exceptionHandler list from Instruction, replaced by exception Edge on Invoke and Throw * replaced list of ExceptionHandlers with single exception edge in debug info misc: * changed GraphvizPrinter layout (smaller ports on large nodes) * removed defunct run config

#!/bin/bash
if [ -z "${JDK7}" ]; then
  echo "JDK7 is not defined."
  exit 1;
fi
if [ -z "${JDK7G}" ]; then
  echo "JDK7G is not defined."
  exit 1;
fi
if [ -z "${MAXINE}" ]; then
  echo "MAXINE is not defined. It must point to a maxine repository directory."
  exit 1;
fi
if [ -z "${GRAAL}" ]; then
  echo "GRAAL is not defined. It must point to a maxine repository directory."
  exit 1;
fi
${JDK7}/bin/java -client -d64 -graal -version
${JDK7G}/bin/java -client -d64 -graal -version