Refactor code into utils, mfapi and mfshell

- utils is the low level library used by the others
 - mfapi uses utils and implements the api and some wrappers
 - mfshell uses mfapi and utils to provide a shell

mfapi/folder.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2013 Bryan Christ <bryan.christ@mediafire.com>
+ *               2014 Johannes Schauer <j.schauer@email.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2, as published by 
+ * the Free Software Foundation.
+ *
+ * This program 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 
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#ifndef __MFAPI_FOLDER_H__
+#define __MFAPI_FOLDER_H__
+
+typedef struct _folder_s    folder_t;
+
+struct _folder_s;
+
+folder_t*   folder_alloc(void);
+
+void        folder_free(folder_t *folder);
+
+int         folder_set_key(folder_t *folder,const char *folderkey);
+
+const char* folder_get_key(folder_t *folder);
+
+int         folder_set_parent(folder_t *folder,const char *folderkey);
+
+const char* folder_get_parent(folder_t *folder);
+
+int         folder_set_name(folder_t *folder,const char *name);
+
+const char* folder_get_name(folder_t *folder);
+
+#endif