Add an LLVM API change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75426 91177308-0d34-0410-b5e6-96231b3b80d8

docs/ReleaseNotes-2.6.html

@@ -449,6 +449,8 @@ API changes are:</p>
     <tt>CreateNeg</tt> should only be used for integer arithmetic now;
     <tt>CreateFAdd</tt>, <tt>CreateFSub</tt>, <tt>CreateFMul</tt>, and
     <tt>CreateFNeg</tt> should now be used for floating-point arithmetic.</li>
+<li>The DynamicLibrary class can no longer be constructed, its functionality has
+    moved to static member functions.</li>
 </ul>
 
 </div>