RD-3: Implemented M_LoadDefaults. Also add d_strings, giving supprot for English default strings

src/main.rs

@@ -1,6 +1,9 @@
 mod d_main;
+mod d_strings;
 mod doomdef;
+mod hu_stuff;
 mod m_argv;
+mod m_misc;
 mod w_wad;
 mod math;