Made istl includes relative. This is needed to build the tutorial in

the istl distribution. [[Imported from SVN: r1907]]

Made istl includes relative. This is needed to build the tutorial in
6bc7c082 · Markus Blatt · 3d58a1c5 · 6bc7c082
Commit 6bc7c082 authored 20 years ago by Markus Blatt
--- a/istl/io.hh
+++ b/istl/io.hh
@@ -12,7 +12,7 @@
 #include "istlexception.hh"
 #include <dune/common/fvector.hh>
 #include <dune/common/fmatrix.hh>
-#include <dune/istl/bcrsmatrix.hh>
+#include "bcrsmatrix.hh"

 /** \file