root_message changed to be the fully-qualified named of the root me…

…ssage.

Before this change, the `root_message` field was message name alone, without its full path. After this change, `root_message` must be the fully-qualified name, which includes the package name. For instance, a message named `Foo` in a package `bar.baz`, will have a fully-qualified name `bar.baz.Foo`.

generator/generator.go

@@ -68,9 +68,11 @@ func NewGenerator() *Generator {
 //
 //   import "yara.proto"
 //
+//   package "foo"
+//
 //   option (yara.module_options) = {
-//	   name : "foomodule"
-//	   root_message: "FooMessage";
+//	   name : "foo"
+//	   root_message: "foo.FooMessage";
 //   };
 //
 // These options are required for the generator to be able to generate the YARA
@@ -189,7 +191,7 @@ func (g *Generator) typeClass(t pb.FieldDescriptorProto_Type) typeClass {
 
 func (g *Generator) findMessage(fd *desc.FileDescriptor, messageType string) *desc.MessageDescriptor {
 	for _, m := range fd.GetMessageTypes() {
-		if m.GetName() == messageType {
+		if m.GetFullyQualifiedName() == messageType {
 			return m
 		}
 	}