C++: Synchronize function decl/def refactoring.

When editing a function declaration or definition the code model
may realize the same changes have to be applied somewhere else. A
refactoring marker will pop up that can be clicked to perform the
changes. Alternatively, press enter to apply.

Change-Id: I2299a2ecfb6a8f87d4853fc7cfa99486f890a1d3
Reviewed-on: http://codereview.qt.nokia.com/2909
Reviewed-by: Leandro T. C. Melo <leandro.melo@nokia.com>

src/libs/utils/changeset.cpp

@@ -41,6 +41,11 @@ ChangeSet::ChangeSet()
 {
 }
 
+ChangeSet::ChangeSet(const QList<EditOp> &operations)
+    : m_string(0), m_cursor(0), m_operationList(operations), m_error(false)
+{
+}
+
 static bool overlaps(int posA, int lengthA, int posB, int lengthB) {
     if (lengthB > 0) {
         return