Added explicit move constructor to temporary_filet

VS2013 does not allow default generation of move constructors.  Added
explicit implementation to temporary_filet.

Author: pkesseli

src/util/tempfile.h

@@ -32,7 +32,10 @@ class temporary_filet
   // Using the copy constructor would delete the file twice.
   temporary_filet(const temporary_filet &)=delete;
 
-  temporary_filet(temporary_filet &&)=default;
+  temporary_filet(temporary_filet &&other) :
+      name(std::move(other.name))
+  {
+  }
 
   // get the name
   std::string operator()() const