curl tool: reviewed code moved to tool_*.[ch] files

my_setopt and my_setopt_str no longer ignores curl_easy_setopt result.

Fixed some OOM handling issues.

src/tool_setopt.h

@@ -0,0 +1,50 @@
+#ifndef HEADER_CURL_TOOL_SETOPT_H
+#define HEADER_CURL_TOOL_SETOPT_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "setup.h"
+
+CURLcode tool_setopt(CURL *curl, bool str, struct Configurable *config,
+                     const char *name, CURLoption tag, ...);
+
+/*
+ * Macros used in operate()
+ */
+
+#define my_setopt(x,y,z)  do { \
+  res = tool_setopt(x, FALSE, config, #y, y, z); \
+  if(res) \
+    goto quit_curl; \
+} WHILE_FALSE
+
+#define my_setopt_str(x,y,z)  do { \
+  res = tool_setopt(x, TRUE, config, #y, y, z); \
+  if(res) \
+    goto quit_curl; \
+} WHILE_FALSE
+
+#define res_setopt(x,y,z) tool_setopt(x, FALSE, config, #y, y, z)
+
+#define res_setopt_str(x,y,z) tool_setopt(x, TRUE, config, #y, y, z)
+
+#endif /* HEADER_CURL_TOOL_SETOPT_H */
+