std-autogen: add comment explaining purpose

diff --git a/mk/std-autogen.sh b/mk/std-autogen.sh
index f69c5eb022f49f1b647b45815adec2fae1cbc3bd..a7bf045bae602cd5723a32ecdee38e064a950b14 100755 (executable)
--- a/mk/std-autogen.sh
+++ b/mk/std-autogen.sh
@@ -1,5 +1,11 @@
 #! /bin/sh
 
+# autogen for non-automake trees
+#
+# - it installs files: config.sub, config.guess, install-sh
+# - it installs ltmain.sh, if LT_INIT or *LIBTOOL macro is used
+#
+
 USUAL_DIR="$1"
 test -n "${USUAL_DIR}" || USUAL_DIR="."