Remove remaining Boost-related artifacts

Boost is no longer needed in dune-istl.

cmake/modules/DuneIstlMacros.cmake

-include(DuneBoost)
-find_package(BoostFusion)
 find_package(METIS)
 find_package(ParMETIS)
 include(AddParMETISFlags)

config.h.cmake

@@ -28,12 +28,6 @@
 
 /* end private */
 
-/* define if the Boost::Fusion headers are available */
-#cmakedefine HAVE_BOOST_FUSION
-
-/* Define to ENABLE_BOOST if the Boost library is available */
-#cmakedefine HAVE_BOOST ENABLE_BOOST
-
 /* Define to ENABLE_SUPERLU if the SuperLU library is available */
 #cmakedefine HAVE_SUPERLU ENABLE_SUPERLU
 

dune/istl/tutorial/CMakeLists.txt

 add_executable(example "example.cc")
 add_dune_mpi_flags(example)
-add_dune_boost_flags(example)
 target_link_libraries(example "dunecommon")

dune/istl/tutorial/Makefile.am

@@ -2,7 +2,7 @@ dist_noinst_DATA = example.cc
 
 noinst_PROGRAMS = example
 example_SOURCES = example.cc
-example_CPPFLAGS = $(AM_CPPFLAGS) $(BOOST_CPPFLAGS) $(DUNE_CPPFLAGS)
+example_CPPFLAGS = $(AM_CPPFLAGS) $(DUNE_CPPFLAGS)
 
 include $(top_srcdir)/am/global-rules
 

m4/dune_istl.m4

@@ -10,8 +10,6 @@ AC_DEFUN([DUNE_ISTL_CHECKS],
   AC_REQUIRE([__AC_FC_NAME_MANGLING])
   AC_REQUIRE([AC_PROG_F77])
   AC_REQUIRE([ACX_BLAS])
-  AC_REQUIRE([DUNE_BOOST_BASE])
-  DUNE_BOOST_BASE(, [ DUNE_BOOST_FUSION ] , [] )
 
   # add summary entries for tests not maintained by dune
   DUNE_ADD_SUMMARY_ENTRY([METIS],[$with_metis])