test for tuple and type_traits headers.

[[Imported from SVN: r6640]]

cmake/modules/FindCXX11Features.cmake

@@ -220,3 +220,11 @@ CHECK_CXX_SOURCE_COMPILES("
   }
 " HAVE_RVALUE_REFERENCES
 )
+include(CheckIncludeFile)
+include(CheckIncludeFileCXX)
+# Search for some tr1 headers
+foreach(_HEADER tuple tr1/tuple type_traits tr1/type_traits)
+  string(REPLACE "/" "_" _HEADER_VAR ${_HEADER})
+  string(TOUPPER ${_HEADER_VAR} _HEADER_VAR )
+  check_include_file_cxx(${_HEADER} "HAVE_${_HEADER_VAR}")
+endforeach(_HEADER tuple tr1/tuple tr1/type_traits)