zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/speed-limit.d b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/speed-limit.d
new file mode 100644
index 0000000..e2b81c7
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/speed-limit.d
@@ -0,0 +1,10 @@
+Long: speed-limit
+Short: Y
+Arg: <speed>
+Help: Stop transfers slower than this
+---
+If a download is slower than this given speed (in bytes per second) for
+speed-time seconds it gets aborted. speed-time is set with --speed-time and is
+30 if not set.
+
+If this option is used several times, the last one will be used.