Rewrite prefs loading/saving to use Cocoa

osx/tools/prefs.hpp

@@ -0,0 +1,27 @@
+//
+//  prefs.hpp
+//  BoE
+//
+//  Created by Celtic Minstrel on 14-04-14.
+//
+//
+
+#ifndef BoE_prefs_hpp
+#define BoE_prefs_hpp
+
+#include <string>
+#include <vector>
+
+void set_pref(std::string keypath, bool value);
+bool get_bool_pref(std::string keypath);
+
+void set_pref(std::string keypath, int value);
+int get_int_pref(std::string keypath);
+
+void append_iarray_pref(std::string keypath, int value);
+std::vector<int> get_iarray_pref(std::string keypath);
+
+void clear_pref(std::string keypath);
+bool sync_prefs();
+
+#endif