zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/netrc-optional.d b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/netrc-optional.d
new file mode 100644
index 0000000..c285403
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/netrc-optional.d
@@ -0,0 +1,7 @@
+Long: netrc-optional
+Help: Use either .netrc or URL
+Mutexed: netrc
+See-also: netrc-file
+---
+Very similar to --netrc, but this option makes the .netrc usage \fBoptional\fP
+and not mandatory as the --netrc option does.