Add myself as exif maintainer

KalleZ · KalleZ · commit b1fd08d94c3b · 2017-07-08T13:51:36.000+02:00
diff --git a/EXTENSIONS b/EXTENSIONS
@@ -269,7 +269,7 @@ STATUS:              Working
 SINCE:               5.3
 -------------------------------------------------------------------------------
 EXTENSION:           exif
-PRIMARY MAINTAINER:  Marcus Boerger <helly@php.net>
+PRIMARY MAINTAINER:  Kalle Sommer Nielsen <kalle@php.net>
 MAINTENANCE:         Maintained
 STATUS:              Working
 SINCE:               4.2
