Update .mailmap

The .mailmap file is used to map author and committer names and
email addresses to canonical real names and email addresses.
See https://git-scm.com/docs/git-check-mailmap

Change-Id: I720326ad204bd0737e8ace2620ccbd1347114ef4
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

.mailmap

@@ -1,5 +1,13 @@
+Chris Aniszczyk <caniszczyk@gmail.com>                      Chris Aniszczyk <zx@eclipsesource.com>
+Christian Halstrick <christian.halstrick@sap.com>           Christian Halstrick <christian.halstrick@gmail.com>
+Dani Megert <Daniel_Megert@ch.ibm.com>                      Daniel Megert <daniel_megert@ch.ibm.com>
+David Pursehouse <david.pursehouse@gmail.com>               David Pursehouse <david.pursehouse@sonymobile.com>
 Han-Wen Nienhuys <hanwen@google.com>                        Han-Wen NIenhuys <hanwen@google.com>
+Hector Oswaldo Caballero <hector.caballero@ericsson.com>    Hector Caballero <hector.caballero@ericsson.com>
+Lars Vogel <Lars.Vogel@vogella.com>                         Lars Vogel <Lars.Vogel@gmail.com>
 Mark Ingram <markdingram@gmail.com>                         markdingram <markdingram@gmail.com>
+Markus Duft <markus.duft@ssi-schaefer.com>                  Markus Duft <markus.duft@salomon.at>
+Michael Keppler <michael.keppler@gmx.de>                    Michael Keppler <Michael.Keppler@gmx.de>
 Roberto Tyley <roberto.tyley@guardian.co.uk>                roberto <roberto.tyley@guardian.co.uk>
 Saša Živkov <sasa.zivkov@sap.com>                           Sasa Zivkov <sasa.zivkov@sap.com>
 Saša Živkov <sasa.zivkov@sap.com>                           Saša Živkov <zivkov@gmail.com>