add .mailmap to fix authors for git-shortlog

.mailmap

@@ -0,0 +1,25 @@
+#
+# This list is used by git-shortlog to fix a few botched name translations
+# in the git archive, either because the author's full name was messed up
+# and/or not always written the same way, making contributions from the
+# same person appearing not to be so.
+#
+
+Alexandre Fayolle <[email protected]>
+Alexis Delattre <[email protected]>
+Guewen Baconnier <[email protected]>
+Joaquin Gutierrez <[email protected]>
+Leonardo Pistone <[email protected]>
+Leonardo Pistone <[email protected]> <[email protected]>
+Lionel Sausin <[email protected]>
+Lorenzo Battistini <[email protected]>
+Luc Demeyer <[email protected]>
+Matthieu Dietrich <[email protected]>
+Nicolas Bessi <[email protected]>
+Pedro Baeza <[email protected]>
+Pedro Baeza <[email protected]> <[email protected]>
+Romain Deheele <[email protected]>
+Stéphane Bidoul <[email protected]>
+Vincent Renaville <[email protected]>
+Yannick Vaucher <[email protected]>
+Yann Papouin <[email protected]>