gel.demo: Use 'gel_sdl'.

4-high/gel/applet/demo/skinning/human/human_model/human_model.gpr

@@ -1,5 +1,5 @@
 with
-     "gel",
+     "gel_sdl",
      "lace_shared";
 
 

4-high/gel/applet/demo/skinning/human/human_model_v1/human_model_v1.gpr

@@ -1,4 +1,5 @@
-with "gel";
+with
+     "gel_sdl";
 
 
 project Human_Model_V1
@@ -8,15 +9,19 @@ is
    for Exec_Dir use ".";
    for Main use ("launch_human_model_v1.adb");
    for Languages use ("Ada");
+   
    type Os_Type is
       ("Windows_NT", "Linux", "MacOSX");
    Os : Os_Type := external ("OS");
+   
    type Restrictions is
       ("xgc", "ravenscar");
    Restrictions : Restrictions := external ("restrictions");
+   
    type Platform is
       ("egl", "glx");
    Opengl_Platform : Platform := external ("opengl_platform");
+   
    type Profile is
       ("safe", "lean", "desk");
    Opengl_Profile : Profile := external ("opengl_profile");

4-high/gel/applet/demo/skinning/human/mh_animation/simple_animation.gpr

@@ -1,5 +1,5 @@
 with
-     "gel",
+     "gel_sdl",
      "lace_shared";