introduce parameter: don't show conflicts between new param name and parameter to remove (IDEA-140607)

java/java-tests/testData/refactoring/introduceParameter/afterConflictingNameWithParameterToDelete.java

@@ -0,0 +1,6 @@
+class Test {
+    public void foo(final String anObject) {
+        bar(anObject);
+    }
+    void bar(String f){}
+}

java/java-tests/testData/refactoring/introduceParameter/beforeConflictingNameWithParameterToDelete.java

@@ -0,0 +1,6 @@
+class Test {
+    public void foo(Object anObject) {
+        bar(anObject.toStrin<caret>g());
+    }
+    void bar(String f){}
+}