Trim unnecessarily required config vars

The modules declare which configuration variables they need to have
present in config.h, not only their own but also defined in projects
using them.

However, a lot of these variables are not actually used in the headers!

This changeset removes all HAVE_XXX variables which is not present in
any opm/*.h* file in these projects, and thus there is no need for the
client to specify.

Note that only the variables used by the module *itself* should be
listed; the build system will setup the complete list from the
prerequisites.

cmake/Modules/opm-core-prereqs.cmake

@@ -3,11 +3,8 @@
 
 # defines that must be present in config.h for our headers
 set (opm-core_CONFIG_VAR
-	HAVE_DUNE_ISTL
 	HAVE_ERT
 	HAVE_SUITESPARSE_UMFPACK_H
-	HAVE_NULLPTR
-	HAVE_STATIC_ASSERT
 	)
 
 # dependencies

cmake/Modules/opm-material-prereqs.cmake

@@ -3,20 +3,8 @@
 
 # defines that must be present in config.h for our headers
 set (opm-material_CONFIG_VAR
-	HAVE_NULLPTR
-	HAVE_ARRAY
-	HAVE_ATTRIBUTE_ALWAYS_INLINE
-	HAS_ATTRIBUTE_UNUSED
-	HAS_ATTRIBUTE_DEPRECATED
-	HAS_ATTRIBUTE_DEPRECATED_MSG
-	HAVE_CONSTEXPR
-	HAVE_INTEGRAL_CONSTANT
-	HAVE_STATIC_ASSERT
-	HAVE_VARIADIC_TEMPLATES
-	HAVE_VARIADIC_CONSTRUCTOR_SFINAE
-	HAVE_RVALUE_REFERENCES
-	HAVE_TUPLE
-	HAVE_TR1_TUPLE
+	HAVE_MPI
+	HAVE_VALGRIND
 	)
 
 # dependencies

cmake/Modules/opm-polymer-prereqs.cmake

@@ -3,7 +3,6 @@
 
 # defines that must be present in config.h for our headers
 set (opm-polymer_CONFIG_VAR
-	HAVE_ERT
 	)
 
 # dependencies

cmake/Modules/opm-porsol-prereqs.cmake

@@ -3,7 +3,6 @@
 
 # defines that must be present in config.h for our headers
 set (opm-porsol_CONFIG_VAR
-	HAVE_VALGRIND
 	)
 
 # dependencies

cmake/Modules/opm-upscaling-prereqs.cmake

@@ -3,7 +3,6 @@
 
 # defines that must be present in config.h for our headers
 set (opm-upscaling_CONFIG_VAR
-	HAVE_LAPACK
 	HAVE_SUPERLU
 	)