CXX-1113 Add THIRD-PARTY-NOTICES file

THIRD-PARTY-NOTICES

@@ -0,0 +1,38 @@
+MongoDB uses third-party libraries or other resources that may
+be distributed under licenses different than the MongoDB software.
+
+In the event that we accidentally failed to list a required notice,
+please bring it to our attention through any of the ways detailed here:
+
+    https://jira.mongodb.org/browse/CXX
+
+The attached notices are provided for information only.
+
+For any licenses that require disclosure of source, sources are available at
+https://github.com/mongodb/mongo-cxx-driver.
+
+1) License Notice for the Catch library
+---------------------------------------
+[Note: Catch is used only for testing.]
+
+Copyright (c) 2012 Two Blue Cubes Ltd. All rights reserved.
+
+Distributed under the Boost Software License, Version 1.0.
+See http://www.boost.org/LICENSE_1_0.txt
+
+2) License Notice for the MNMLSTC library
+-----------------------------------------
+[Note: MNMLSTC is the default polyfill.  If configured, it is downloaded
+and compiled during the build.]
+
+Copyright (c) 2013 - 2015 MNMLSTC
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not
+use this software except in compliance with the License. You may obtain a
+copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+License for the specific language governing permissions and limitations
+under the License.