Make fixes, improvements, and chibicc python bindings

- python now mixes audio 10x faster
- python octal notation is restored
- chibicc now builds code 3x faster
- chibicc now has help documentation
- chibicc can now generate basic python bindings
- linenoise now supports some paredit-like features

See #141

third_party/python/Lib/test/test_compile.py

@@ -163,8 +163,12 @@ if 1:
         for arg in ["077787", "0xj", "0x.", "0e",  "090000000000000",
                     "080000000000000", "000000000000009", "000000000000008",
                     "0b42", "0BADCAFE", "0o123456789", "0b1.1", "0o4.2",
-                    "0b101j2", "0o153j2", "0b100e1", "0o777e1", "0777",
-                    "000777", "000000000000007"]:
+                    "0b101j2", "0o153j2", "0b100e1", "0o777e1",
+                    # [jart] restore octal
+                    # "0777",
+                    # "000777",
+                    # "000000000000007",
+                    ]:
             self.assertRaises(SyntaxError, eval, arg)
 
         self.assertEqual(eval("0xff"), 255)