maint: consolidate AUTHOR listings for Gerd von Egidy

.mailmap

@@ -30,6 +30,8 @@
 <stefanb@us.ibm.com> <stefanb@linux.vnet.ibm.com>
 <josh.durgin@inktank.com> <joshd@hq.newdream.net>
 <josh.durgin@inktank.com> <josh.durgin@dreamhost.com>
+<gerd@egidy.de> <lists@egidy.de>
+<gerd@egidy.de> <gerd.von.egidy@intra2net.com>
 
 # Name consolidation:
 # Preferred author spelling <preferred email>
@@ -37,3 +39,4 @@ Alex Jia <ajia@redhat.com>
 Royce Lv <lvroyce@linux.vnet.ibm.com>
 Daniel J Walsh <dwalsh@redhat.com>
 Ján Tomko <jtomko@redhat.com>
+Gerd von Egidy <gerd@egidy.de>

AUTHORS

@@ -71,7 +71,7 @@ Patches have also been contributed by:
   Chris Wright         <chrisw@redhat.com>
   Ben Guthro           <ben.guthro@gmail.com>
   Shigeki Sakamoto     <fj0588di@aa.jp.fujitsu.com>
-  Gerd von Egidy       <lists@egidy.de>
+  Gerd von Egidy       <gerd@egidy.de>
   Itamar Heim          <iheim@redhat.com>
   Markus Armbruster    <armbru@redhat.com>
   Ryota Ozaki          <ozaki.ryota@gmail.com>