zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/http2-prior-knowledge.d b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/http2-prior-knowledge.d
new file mode 100644
index 0000000..f793f77
--- /dev/null
+++ b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/http2-prior-knowledge.d
@@ -0,0 +1,12 @@
+Long: http2-prior-knowledge
+Tags: Versions
+Protocols: HTTP
+Added: 7.49.0
+Mutexed: http1.1 http1.0 http2
+Requires: HTTP/2
+Help: Use HTTP 2 without HTTP/1.1 Upgrade
+---
+Tells curl to issue its non-TLS HTTP requests using HTTP/2 without HTTP/1.1
+Upgrade. It requires prior knowledge that the server supports HTTP/2 straight
+away. HTTPS requests will still do HTTP/2 the standard way with negotiated
+protocol version in the TLS handshake.