Add support for approximate matching in other tools

tools/hsbench/engine_hyperscan.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, Intel Corporation
+ * Copyright (c) 2016-2017, Intel Corporation
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
@@ -289,6 +289,10 @@ buildEngineHyperscan(const ExpressionMap &expressions, ScanMode scan_mode,
                        m.first);
                 return nullptr;
             }
+            if (forceEditDistance) {
+                extparam.flags |= HS_EXT_FLAG_EDIT_DISTANCE;
+                extparam.edit_distance = editDistance;
+            }
 
             exprs.push_back(expr);
             ids.push_back(m.first);