style: Start applying PEP8 to Python files, indentation issues

Done with `autopep8 --select=E1`, fixes:

- E101 - Reindent all lines.
- E112 - Fix under-indented comments.
- E113 - Fix over-indented comments.
- E115 - Fix under-indented comments.
- E116 - Fix over-indented comments.
- E121 - Fix a badly indented line.
- E122 - Fix a badly indented line.
- E123 - Fix a badly indented line.
- E124 - Fix a badly indented line.
- E125 - Fix indentation undistinguish from the next logical line.
- E126 - Fix a badly indented line.
- E127 - Fix a badly indented line.
- E128 - Fix a badly indented line.
- E129 - Fix a badly indented line.

modules/enet/SCsub

@@ -8,21 +8,21 @@ Import('env_modules')
 env_enet = env_modules.Clone()
 
 if (env["enet"] != "system"): # builtin
-	thirdparty_dir = "#thirdparty/enet/"
-	thirdparty_sources = [
-		"callbacks.c",
-		"compress.c",
-		"host.c",
-		"list.c",
-		"packet.c",
-		"peer.c",
-		"protocol.c",
-		"unix.c",
-		"win32.c",
-	]
-	thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
+    thirdparty_dir = "#thirdparty/enet/"
+    thirdparty_sources = [
+        "callbacks.c",
+        "compress.c",
+        "host.c",
+        "list.c",
+        "packet.c",
+        "peer.c",
+        "protocol.c",
+        "unix.c",
+        "win32.c",
+    ]
+    thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
 
-	env_enet.add_source_files(env.modules_sources, thirdparty_sources)
-	env_enet.Append(CPPPATH = [thirdparty_dir])
+    env_enet.add_source_files(env.modules_sources, thirdparty_sources)
+    env_enet.Append(CPPPATH = [thirdparty_dir])
 
 env_enet.add_source_files(env.modules_sources, "*.cpp")