restore OpenJPEG AUTHORS and THANKS files

AUTHORS_OPENJPEG

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+Authors of OpenJPEG
+See also the files THANKS and CHANGES
+
+David Janssens designed and implemented the first version of OpenJPEG.
+Kaori Hagihara designed and implemented the first version of OpenJPIP.
+Jerome Fimes implemented the alpha version of OpenJPEG 2.0.
+Giuseppe Baruffa added the JPWL functionalities.
+Micka�l Savinaud implemented the final OpenJPEG 2.0 version based on a big merge between 1.5 version and alpha version of 2.0.
+Mathieu Malaterre participated to the OpenJPEG 2.0 version and improved the libraries and utilities. 
+Yannick Verschueren, 
+Herve Drolon, 
+Francois-Olivier Devaux, 
+Antonin Descampe
+    improved the libraries and utilities.
+

THANKS_OPENJPEG

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+OpenJPEG THANKS file
+
+Many people have contributed to OpenJPEG by reporting problems, suggesting various improvements,
+or submitting actual code. Here is a list of these people. Help me keep
+it complete and exempt of errors.
+
+Giuseppe Baruffa
+Ben Boeckel
+Aaron Boxer
+David Burken
+Matthieu Darbois
+Rex Dieter
+Herve Drolon
+Antonin Descampe
+Francois-Olivier Devaux
+Parvatha Elangovan
+Jerôme Fimes
+Bob Friesenhahn
+Kaori Hagihara
+Luc Hermitte
+Luis Ibanez
+David Janssens
+Hans Johnson
+Callum Lerwick
+Sebastien Lugan
+Benoit Macq
+Arnaud Maye
+Julien Malik
+Vincent Nicolas
+Glenn Pearson
+Dzonatas Sol
+Winfried Szukalski
+Vincent Torri
+Yannick Verschueren
+Peter Wimmer