Ifpack2: Fix #1706

@trilinos/ifpack2 Ifpack2 had link errors in an ETI (explicit template
instantiation) OFF build.  Line 53 of Ifpack2_ILUT_def.hpp only
included Ifpack2_LocalSparseTriangularSolver_decl.hpp, but the file
calls LocalSparseTriangularSolver methods.  Thus, it should have
included Ifpack2_LocalSparseTriangularSolver.hpp.  (In an ETI OFF
build, the latter is a generated header file that includes both
Ifpack2_LocalSparseTriangularSolver_decl.hpp and
Ifpack2_LocalSparseTriangularSolver_def.hpp.)  This commit fixes that.

packages/ifpack2/src/Ifpack2_ILUT_def.hpp

@@ -50,7 +50,7 @@
 
 #include "Ifpack2_Heap.hpp"
 #include "Ifpack2_LocalFilter.hpp"
-#include "Ifpack2_LocalSparseTriangularSolver_decl.hpp"
+#include "Ifpack2_LocalSparseTriangularSolver.hpp"
 #include "Ifpack2_Parameters.hpp"
 #include "Tpetra_CrsMatrix.hpp"
 #include "Teuchos_Time.hpp"