[structure] rename cxx11.hh to std/constexpr.hh

The majority of developers favor individual headers for (emulation of) C++11
features over collecting them in a single header cxx11.hh. This patch
renames cxx11.hh to constexpr.hh and moves it into the subdirectory std.
This is the place most developers would like these headers in (see
http://users.dune-project.org/doodles/4).

configure.ac

@@ -32,6 +32,7 @@ AC_CONFIG_FILES([Makefile
      dune/common/test/Makefile
      dune/common/parallel/Makefile
      dune/common/parallel/test/Makefile
+     dune/common/std/Makefile
      doc/Makefile
      doc/comm/Makefile
      doc/comm/figures/Makefile

dune/common/CMakeLists.txt

 add_subdirectory("parallel")
+add_subdirectory("std")
 add_subdirectory("test" EXCLUDE_FROM_ALL)
 
 #build the library dunecommon
@@ -31,7 +32,6 @@ install(FILES
         bitsetvector.hh
         classname.hh
         collectivecommunication.hh
-        cxx11.hh
         debugallocator.hh
         debugstream.hh
         deprecated.hh

dune/common/Makefile.am

 # $Id$
 
-SUBDIRS = . test parallel
+SUBDIRS = . test parallel std
 
 # the standard debug streams are put into the libdune
 noinst_LTLIBRARIES = libcommon.la
@@ -28,7 +28,6 @@ commoninclude_HEADERS = 			\
 	bitsetvector.hh				\
 	classname.hh				\
 	collectivecommunication.hh		\
-	cxx11.hh				\
 	debugallocator.hh			\
 	debugstream.hh				\
 	deprecated.hh				\

dune/common/fmatrix.hh

@@ -8,12 +8,12 @@
 #include <cstddef>
 #include <iostream>
 
-#include <dune/common/cxx11.hh>
 #include <dune/common/exceptions.hh>
 #include <dune/common/fvector.hh>
 #include <dune/common/densematrix.hh>
 #include <dune/common/precision.hh>
 #include <dune/common/static_assert.hh>
+#include <dune/common/std/constexpr.hh>
 
 namespace Dune
 {

dune/common/fvector.hh

@@ -11,7 +11,7 @@
 #include <cstring>
 #include <utility>
 
-#include <dune/common/cxx11.hh>
+#include <dune/common/std/constexpr.hh>
 
 #include "typetraits.hh"
 #include "exceptions.hh"

dune/common/std/CMakeLists.txt

+install(FILES
+        constexpr.hh
+DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dune/common/std)
+
+# Install some test headers, because they get used by tests in other modules
+# We do this here as test will not be considered for make install
+install(FILES test/iteratortest.hh DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dune/common/test)

dune/common/std/Makefile.am

+stdincludedir = $(includedir)/dune/common/std
+stdinclude_HEADERS = 				\
+	constexpr.hh
+
+EXTRA_DIST = CMakeLists.txt
+
+include $(top_srcdir)/am/global-rules

dune/common/cxx11.hh → dune/common/std/constexpr.hh

-#ifndef DUNE_COMMON_CXX11_HH
-#define DUNE_COMMON_CXX11_HH
+#ifndef DUNE_COMMON_STD_CONSTEXPR_HH
+#define DUNE_COMMON_STD_CONSTEXPR_HH
 
 #if HAVE_CONSTEXPR
 #define DUNE_CONSTEXPR constexpr
@@ -7,4 +7,4 @@
 #define DUNE_CONSTEXPR
 #endif // #else // #if HAVE_CONSTEXPR
 
-#endif // #ifndef DUNE_COMMON_CXX11_HH
+#endif // #ifndef DUNE_COMMON_STD_CONSTEXPR_HH