Refactor and extract state handling, so it can be used independently of generation.

Author: chumer

truffle/src/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/BitStateList.java

@@ -56,7 +56,6 @@
 import javax.lang.model.type.TypeMirror;
 
 import com.oracle.truffle.dsl.processor.generator.BitSet.BitRange;
-import com.oracle.truffle.dsl.processor.generator.FlatNodeGenFactory.MultiStateBitSet;
 import com.oracle.truffle.dsl.processor.java.ElementUtils;
 import com.oracle.truffle.dsl.processor.java.model.CodeTreeBuilder;
 import com.oracle.truffle.dsl.processor.model.CacheExpression;