overall result message in all deps build scripts

build_linux_deps.sh

@@ -357,4 +357,11 @@ popd
 echo; echo;
 
 
+echo;
+if [[ $last_code = 0 ]]; then
+  echo "[GG] no failures"
+else
+  echo "[XX] general failure" >&2
+fi
+
 exit $last_code

build_win_deps.bat

@@ -408,6 +408,12 @@ exit /b
 exit /b 1
 
 :end_script
+echo:
+if %last_code% equ 0 (
+  echo [GG] no failures
+) else (
+  1>&2 echo [XX] general failure
+)
 popd
 endlocal & (
     exit /b %last_code%