Work around a spurious style.test error.

* src/saba/sabacomplementtgba.hh (spot): Rewrite Büchi as B\"uchi
is the BibTex entry used as comment, because some version of sed
will choke on non-ascii character and cause sanity/style.test to
fail.

ChangeLog

+2010-02-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>
+
+	Work around a spurious style.test error.
+
+	* src/saba/sabacomplementtgba.hh (spot): Rewrite Bchi as B\"uchi
+	is the BibTex entry used as comment, because some version of sed
+	will choke on non-ascii character and cause sanity/style.test to
+	fail.
+
 2010-02-23  Alexandre Duret-Lutz  <adl@lrde.epita.fr>
 
 	Fix random_graph() not to generate dead states.

src/saba/sabacomplementtgba.hh

@@ -40,7 +40,7 @@ namespace spot
   /// This algorithm comes from:
   /// \verbatim
   /// @Article{         gurumurthy.03.lncs,
-  ///   title         = {On complementing nondeterministic {Büchi} automata},
+  ///   title         = {On complementing nondeterministic {B\"uchi} automata},
   ///   author        = {Gurumurthy, S. and Kupferman, O. and Somenzi, F. and
   ///                   Vardi, M.Y.},
   ///   journal       = {Lecture Notes in Computer Science},