Some cleanup in App cmake files to make them smaller and more readable

src/OpenMesh/Apps/Dualizer/CMakeLists.txt

@@ -5,15 +5,13 @@ include_directories (
   ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
-set (targetName Dualizer)
-
 # collect all header and source files
 acg_append_files (headers "*.hh" .)
 acg_append_files (sources "*.cc" .)
 
-acg_add_executable (${targetName} ${headers} ${sources})
+acg_add_executable (Dualizer ${headers} ${sources})
 
-target_link_libraries (${targetName}
+target_link_libraries (Dualizer
   OpenMeshCore
   OpenMeshTools
 )