Add weaselab namespace

include/ConflictSet.h

@@ -19,6 +19,7 @@ limitations under the License.
 #include <stdint.h>
 
 #ifdef __cplusplus
+namespace weaselab {
 /** A data structure for optimistic concurrency control on ranges of
  * bitwise-lexicographically-ordered keys.
  *
@@ -100,6 +101,7 @@ struct __attribute__((__visibility__("default"))) ConflictSet {
 private:
   Impl *impl;
 };
+} // namespace weaselab
 
 #else