add Campey and Anjo (knuckles) to THANKS so they also show up in about dialog

THANKS

@@ -5,6 +5,7 @@ Andrew Sayman
 Christian Bjälevik
 Christophe Got
 Christoph Neuroth
+David Campey
 Dennis Craven
 Fabian Neumann
 Filippos Papadopoulos
@@ -14,6 +15,7 @@ Fridtjof Bussefor
 Geobert Quach
 Guillaume Morin
 Gustavo J. A. M. Carneiro
+Ivo Anjo
 Juraj Michalek
 Luis Peralta
 Michele Campeotto