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/preproc_runme.go

@@ -0,0 +1,21 @@
+package main
+
+import "./preproc"
+
+func main() {
+	if preproc.GetEndif() != 1 {
+		panic(0)
+	}
+
+	if preproc.GetDefine() != 1 {
+		panic(0)
+	}
+
+	if preproc.GetDefined() != 1 {
+		panic(0)
+	}
+
+	if 2*preproc.One != preproc.Two {
+		panic(0)
+	}
+}