added debug library for freeglut to cmake finder, as it was not found at

all for VS2017.

cmake/FindGLUT.cmake

@@ -40,6 +40,10 @@ IF (WIN32)
     SET(VS_SEARCH_PATH "${CMAKE_WINDOWS_LIBS_DIR}/vs2015/x64/")
   elseif ( CMAKE_GENERATOR MATCHES "^Visual Studio 14.*" )
     SET(VS_SEARCH_PATH "${CMAKE_WINDOWS_LIBS_DIR}/vs2015/x32/")
+  elseif ( CMAKE_GENERATOR MATCHES "^Visual Studio 15.*Win64" )
+    SET(VS_SEARCH_PATH "${CMAKE_WINDOWS_LIBS_DIR}/vs2017/x64/")
+  elseif ( CMAKE_GENERATOR MATCHES "^Visual Studio 15.*" )
+    SET(VS_SEARCH_PATH "${CMAKE_WINDOWS_LIBS_DIR}/vs2017/x32/")
   endif()
 
 
@@ -49,7 +53,7 @@ IF (WIN32)
            "${VS_SEARCH_PATH}/freeglut-3.0.0/include" 
            "${VS_SEARCH_PATH}/freeglut-2.8.1/include" )
 
-  FIND_LIBRARY( GLUT_glut_LIBRARY NAMES glut32 glut freeglut
+  FIND_LIBRARY( GLUT_release_LIBRARY NAMES glut32 glut freeglut
     PATHS
     ${OPENGL_LIBRARY_DIR}
     ${GLUT_ROOT_PATH}/Release
@@ -57,8 +61,23 @@ IF (WIN32)
     "${VS_SEARCH_PATH}/freeglut-3.0.0/lib"
     "${VS_SEARCH_PATH}/freeglut-2.8.1/lib"
     )
+  GET_FILENAME_COMPONENT( GLUT_LIBRARY_DIR ${GLUT_release_LIBRARY} PATH )
+	
+  set(temp ${GLUT_release_LIBRARY})
+  MESSAGE(" setting temp to ${temp}")
+	
+  FIND_LIBRARY( GLUT_debug_LIBRARY NAMES glut32d glutd freeglutd
+    PATHS
+    ${OPENGL_LIBRARY_DIR}
+    ${GLUT_ROOT_PATH}/Release
+    "${CMAKE_WINDOWS_LIBS_DIR}/glut-3.7/lib"
+    "${VS_SEARCH_PATH}/freeglut-3.0.0/lib"
+    "${VS_SEARCH_PATH}/freeglut-2.8.1/lib"
+    )
+  set(temp2 ${GLUT_debug_LIBRARY})
+  MESSAGE(" setting temp2 to ${temp2}")
 
-  GET_FILENAME_COMPONENT( GLUT_LIBRARY_DIR ${GLUT_glut_LIBRARY} PATH ) 
+  set(GLUT_glut_LIBRARY optimized ${GLUT_release_LIBRARY} debug ${GLUT_debug_LIBRARY})  
  
 ELSE (WIN32)