Allow using custom method names in wxHTTP.

Add wxHTTP::SetMethod().

Also simplify the code by determining the method to use in Connect() instead
of doing it in BuildRequest() itself.

Get rid of the now unused wxHTTP_Req enum.

Closes #15354.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74597 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/protocol/http.h

@@ -90,6 +90,23 @@ public:
     */
     int GetResponse() const;
 
+    /**
+        Set HTTP method.
+
+        Set <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html">common</a>
+        or expanded HTTP method.
+
+        Overrides GET or POST methods that is used by default.
+
+        @param method
+            HTTP method name, e.g. "GET".
+
+        @since 3.0.0
+
+        @see SetPostBuffer(), SetPostText()
+    */
+    void SetMethod(const wxString& method);
+
     /**
         It sets data of a field to be sent during the next request to the HTTP server.