Specifically find taskmanager library with CMake

--- applet/CMakeLists.txt.orig	2017-03-29 07:44:51 UTC
+++ applet/CMakeLists.txt
@@ -4,6 +4,7 @@ project(daisy)
  
 # Find the required Libaries
 find_package(KDE4 REQUIRED)
+find_package(KDE4Workspace REQUIRED)
 include(KDE4Defaults)
  
 add_definitions (${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
@@ -26,7 +27,7 @@ kde4_add_plugin(plasma_applet_daisy ${da
 
 target_link_libraries(plasma_applet_daisy 
                       ${KDE4_PLASMA_LIBS} ${KDE4_KDEUI_LIBS} ${KDE4_KUTILS_LIBS} 
-		      ${KDE4_KIO_LIBS} taskmanager )
+		      ${KDE4_KIO_LIBS} ${KDE4WORKSPACE_TASKMANAGER_LIBRARY} )
  
 install(TARGETS plasma_applet_daisy
         DESTINATION ${PLUGIN_INSTALL_DIR})
