Fix tests from jerry-test-suite.

tests/jerry-test-suite/11/11.11/11.11-001.js

@@ -14,4 +14,4 @@
 
 var a = true;
 var b = false;
-assert((a && b) === true)
+assert(!((a && b) === true))

tests/jerry-test-suite/11/11.11/11.11-003.js

@@ -14,4 +14,4 @@
 
 var a = false;
 var b = false;
-assert((a && b) === true)
+assert(!((a && b) === true))

tests/jerry-test-suite/11/11.11/11.11-006.js

@@ -14,4 +14,4 @@
 
 var a = "not empty string"; // will be converted to true
 var b = new Object();
-assert((a && b) !== b)
+assert(!((a && b) !== b))

tests/jerry-test-suite/11/11.11/11.11-007.js

@@ -14,4 +14,4 @@
 
 var a = ""; // empty string - false
 var b = new Object();
-assert((a && b) !== a)
+assert(!((a && b) !== a))