fix errors in copyright

src/CMakeLists.txt

 # Copyright 2016, Anna Seppala, CNRS
 #
-# This file is part of hpp-constraints.
-# hpp-constraints is free software: you can redistribute it and/or
+# This file is part of hpp-affordance.
+# hpp-affordance is free software: you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public License
 # as published by the Free Software Foundation, either version 3 of
 # the License, or (at your option) any later version.
 #
-# hpp-constraints is distributed in the hope that it will be useful, but
+# hpp-affordance is distributed in the hope that it will be useful, but
 # WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 # General Lesser Public License for more details. You should have
 # received a copy of the GNU Lesser General Public License along with
-# hpp-constraints. If not, see <http://www.gnu.org/licenses/>.
+# hpp-affordance. If not, see <http://www.gnu.org/licenses/>.
 
 SET(LIBRARY_NAME ${PROJECT_NAME})
 ADD_LIBRARY(${LIBRARY_NAME}