kicad-install.sh: only install global fp-lib-table if non-existent

scripts/kicad-install.sh

@@ -273,10 +273,12 @@ install_or_update()
     echo " kicad-lib.bzr installed."
 
 
-    echo "step 9) as non-root, install user configuration files..."
+    echo "step 9) as non-root, install global fp-lib-table if none already installed..."
     # install ~/fp-lib-table
-    make  install_github_fp-lib-table
-    echo " kicad user-configuration files installed."
+    if [ ! -e ~/fp-lib-table ]; then
+        make  install_github_fp-lib-table
+        echo " global fp-lib-table installed."
+    fi
 
 
     echo "step 10) installing documentation..."