Import glob2regex

It's still missing ast optimization and some code cleanup is also
needed, but it should be working in the general case.
Also write a small unit test for it.

lib/glob2regex/src/glob_ast.hpp

@@ -0,0 +1,29 @@
+/* Copyright 2015, 2016, Michele Santullo
+ * This file is part of "dindexer".
+ *
+ * "dindexer" is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * "dindexer" is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with "dindexer".  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef id4E6A756CA0A94213A90A40C567F51824
+#define id4E6A756CA0A94213A90A40C567F51824
+
+#include "glob_node_structs.hpp"
+#include <vector>
+#include <string>
+
+namespace g2r {
+	AstType make_ast ( const std::string& parGlob );
+} //namespace g2r
+
+#endif