Fix Issue #21: automatic calculation of alignment padding after lists

nexgb/xgbgen/context.go

@@ -50,6 +50,8 @@ func (c *Context) Morph(xmlBytes []byte) {
 	// Translate XML types to nice types
 	c.protocol = parsedXml.Translate(nil)
 
+	c.protocol.AddAlignGaps()
+
 	// Start with Go header.
 	c.Putln("// Package %s is the X client API for the %s extension.",
 		c.protocol.PkgName(), c.protocol.ExtXName)