[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit

Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/negotiate.d b/ap/lib/libcurl/curl-7.54.1/docs/cmdline-opts/negotiate.d
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+Long: negotiate
+Help: Use HTTP Negotiate (SPNEGO) authentication
+Protocols: HTTP
+See-also: basic ntlm anyauth proxy-negotiate
+---
+Enables Negotiate (SPNEGO) authentication.
+
+This option requires a library built with GSS-API or SSPI support. Use
+--version to see if your curl supports GSS-API/SSPI or SPNEGO.
+
+When using this option, you must also provide a fake --user option to activate
+the authentication code properly. Sending a '-u :' is enough as the user name
+and password from the --user option aren't actually used.
+
+If this option is used several times, only the first one is used.