updated the copyright information and a few things in the manual, to …

…prepare for the release of version 2.1

AUTHORS

@@ -1,40 +1 @@
-  AUTHORS in alphabetical order :
----------------------------------
-
-The SPECFEM3D package was first developed by Dimitri Komatitsch and Jeroen Tromp at Harvard University, then Caltech and Princeton, USA, starting in 1998, based in part on earlier work by Dimitri Komatitsch and Jean-Pierre Vilotte at IPG in Paris, France from 1994 to 1997.
-
-Since then it has been developed and maintained by a development team, in alphabetical order:
-
-Piero Basini,
-Céline Blitz,
-Ebru Bozdağ,
-Emanuele Casarotti,
-Joseph Charles,
-Min Chen,
-Vala Hjörleifsdóttir,
-Sue Kientz,
-Dimitri Komatitsch,
-Jesús Labarta,
-Nicolas Le Goff,
-Pieyre Le Loher,
-Qinya Liu,
-Yang Luo,
-Alessia Maggi,
-Federica Magnoni,
-Roland Martin,
-Dennis McRitchie,
-Matthias Meschede,
-David Michéa,
-Hom Nath Gharti,
-Tarje Nissen-Meyer,
-Daniel Peter,
-Max Rietmann,
-Brian Savage,
-Bernhard Schuberth,
-Anne Sieminski,
-Leif Strand,
-Carl Tape,
-Jeroen Tromp,
-Zhinan Xie,
-Hejun Zhu.
-
+See the manual in directory "doc/USER_MANUAL".