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/extend_template_ns_runme.go

@@ -0,0 +1,14 @@
+package main
+
+import . "./extend_template_ns"
+
+func main() {
+	f := NewFoo_One()
+	if f.Test1(37) != 37 {
+		panic(0)
+	}
+
+	if f.Test2(42) != 42 {
+		panic(0)
+	}
+}