Add support for the Go programming language.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12108 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/go/overload_extendc_runme.go

@@ -0,0 +1,33 @@
+package main
+
+import "./overload_extendc"
+
+func main() {
+	f := overload_extendc.NewFoo()
+	if f.Test(3) != 1 {
+		panic(0)
+	}
+	if f.Test("hello") != 2 {
+		panic(0)
+	}
+	if f.Test(float64(3.5), float64(2.5)) != 3 {
+		panic(0)
+	}
+	if f.Test("hello", 20) != 1020 {
+		panic(0)
+	}
+	if f.Test("hello", 20, 100) != 120 {
+		panic(0)
+	}
+
+	// C default args
+	if f.Test(f) != 30 {
+		panic(0)
+	}
+	if f.Test(f, 100) != 120 {
+		panic(0)
+	}
+	if f.Test(f, 100, 200) != 300 {
+		panic(0)
+	}
+}