update curl example

curl/build.gradle

@@ -0,0 +1,27 @@
+apply plugin: 'c'
+apply plugin: 'visual-studio'
+
+sources {
+    download {
+        c {
+            exportedHeaders {
+                srcDir "packages/curl.7.30.0.2/build/native/include"
+            }
+        }
+    }
+}
+
+executables {
+    download {
+        binaries.all {
+            if (toolChain in VisualCpp) {
+                cCompiler.args "/MD"
+                linker.args "/SUBSYSTEM:CONSOLE", "/LIBPATH:../build/lib/", "libcurl.lib"
+            } else if (toolChain in Gcc) {
+                linker.args "-lcurl"
+            }
+        }
+    }
+}
+
+