Make LoadingWindow_Gtk include loading.xpm so that I don't have to make it install.

stepmania/src/arch/LoadingWindow/LoadingWindow_Gtk.cpp

@@ -1,25 +1,26 @@
 #include <gtk/gtk.h>
+#include "loading.xpm"
 
 static GtkWidget *label;
 static GtkWidget *window;
 
 void CreateGtkLoadingWindow() {
+  GdkPixmap *loadmap;
   GtkWidget *vbox;
   GtkWidget *loadimage;
   char **argv;
-  gchar *filename;
   int argc;
 
   argc = 1;
   argv[0] = "stepmania";
   gtk_init(&argc,&argv);
-  filename = g_build_filename(DATADIR,"pixmaps","stepmania","loading.xpm",NULL);
-  loadimage = gtk_image_new_from_file(filename);
-  g_free(filename);
+  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+  gtk_widget_realize(window);
+  loadmap = gdk_pixmap_create_from_xpm_d(window->window,NULL,NULL,loading);
+  loadimage = gtk_image_new_from_pixmap(loadmap,NULL);
   label = gtk_label_new(NULL);
   gtk_label_set_justify(GTK_LABEL(label),GTK_JUSTIFY_CENTER);
   vbox = gtk_vbox_new(FALSE,5);
-  window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
   gtk_container_add(GTK_CONTAINER(window),vbox);
   gtk_box_pack_start(GTK_BOX(vbox),loadimage,FALSE,FALSE,0);
   gtk_box_pack_end(GTK_BOX(vbox),label,TRUE,TRUE,0);