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.

6 files changed, 72 insertions, 72 deletions

diff --git a/drivers/SCsub b/drivers/SCsub
index 8571b0c4ec..27871bb337 100644
--- a/drivers/SCsub
+++ b/drivers/SCsub
@@ -5,7 +5,7 @@ Import('env')
 env.drivers_sources=[]
 
 if ("builtin_zlib" in env and env["builtin_zlib"] == "yes"):
-	SConscript("zlib/SCsub");
+    SConscript("zlib/SCsub");
 
 # OS drivers
 SConscript('unix/SCsub');
@@ -15,9 +15,9 @@ SConscript('windows/SCsub');
 SConscript('alsa/SCsub');
 SConscript('pulseaudio/SCsub');
 if (env["platform"] == "windows"):
-	SConscript("rtaudio/SCsub");
+    SConscript("rtaudio/SCsub");
 if (env["xaudio2"] == "yes"):
-	SConscript("xaudio2/SCsub");
+    SConscript("xaudio2/SCsub");
 
 # Graphics drivers
 SConscript('gles2/SCsub');
@@ -29,14 +29,14 @@ SConscript("png/SCsub");
 # Tools override
 # FIXME: Should likely be integrated in the tools/ codebase
 if (env["tools"]=="yes"):
-	SConscript("convex_decomp/SCsub");
+    SConscript("convex_decomp/SCsub");
 
 if env['vsproj']=="yes":
-	env.AddToVSProject(env.drivers_sources)
+    env.AddToVSProject(env.drivers_sources)
 
 if env.split_drivers:
-	env.split_lib("drivers")
+    env.split_lib("drivers")
 else:
-	env.add_source_files(env.drivers_sources,"*.cpp")
-	lib = env.Library("drivers",env.drivers_sources)
-	env.Prepend(LIBS=[lib])
+    env.add_source_files(env.drivers_sources,"*.cpp")
+    lib = env.Library("drivers",env.drivers_sources)
+    env.Prepend(LIBS=[lib])
diff --git a/drivers/gl_context/SCsub b/drivers/gl_context/SCsub
index cf37e9fe36..acdc3d52e8 100644
--- a/drivers/gl_context/SCsub
+++ b/drivers/gl_context/SCsub
@@ -3,19 +3,19 @@
 Import('env')
 
 if (env["platform"] in ["haiku","osx","windows","x11"]):
-	# Thirdparty source files
-	if (env["glew"] != "system"): # builtin
-		thirdparty_dir = "#thirdparty/glew/"
-		thirdparty_sources = [
-			"glew.c",
-		]
-		thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
+    # Thirdparty source files
+    if (env["glew"] != "system"): # builtin
+        thirdparty_dir = "#thirdparty/glew/"
+        thirdparty_sources = [
+            "glew.c",
+        ]
+        thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
 
-		env.add_source_files(env.drivers_sources, thirdparty_sources)
-		env.Append(CPPFLAGS = ['-DGLEW_STATIC'])
-		env.Append(CPPPATH = [thirdparty_dir])
+        env.add_source_files(env.drivers_sources, thirdparty_sources)
+        env.Append(CPPFLAGS = ['-DGLEW_STATIC'])
+        env.Append(CPPPATH = [thirdparty_dir])
 
-	env.Append(CPPFLAGS = ['-DGLEW_ENABLED'])
+    env.Append(CPPFLAGS = ['-DGLEW_ENABLED'])
 
 # Godot source files
 env.add_source_files(env.drivers_sources, "*.cpp")
diff --git a/drivers/gles2/shaders/SCsub b/drivers/gles2/shaders/SCsub
index 1de5604321..26b6f7f06a 100644
--- a/drivers/gles2/shaders/SCsub
+++ b/drivers/gles2/shaders/SCsub
@@ -3,10 +3,10 @@
 Import('env')
 
 if env['BUILDERS'].has_key('GLSL120GLES'):
-	env.GLSL120GLES('material.glsl');
-	env.GLSL120GLES('canvas.glsl');
-	env.GLSL120GLES('canvas_shadow.glsl');
-	env.GLSL120GLES('blur.glsl');
-	env.GLSL120GLES('copy.glsl');
+    env.GLSL120GLES('material.glsl');
+    env.GLSL120GLES('canvas.glsl');
+    env.GLSL120GLES('canvas_shadow.glsl');
+    env.GLSL120GLES('blur.glsl');
+    env.GLSL120GLES('copy.glsl');
 
 Export('env')
diff --git a/drivers/png/SCsub b/drivers/png/SCsub
index 04cb70e1c1..6eabd8901d 100644
--- a/drivers/png/SCsub
+++ b/drivers/png/SCsub
@@ -6,43 +6,43 @@ env_png = env.Clone()
 
 # Thirdparty source files
 if (env["libpng"] == "builtin"):
-	thirdparty_dir = "#thirdparty/libpng/"
-	thirdparty_sources = [
-		"png.c",
-		"pngerror.c",
-		"pngget.c",
-		"pngmem.c",
-		"pngpread.c",
-		"pngread.c",
-		"pngrio.c",
-		"pngrtran.c",
-		"pngrutil.c",
-		"pngset.c",
-		"pngtrans.c",
-		"pngwio.c",
-		"pngwrite.c",
-		"pngwtran.c",
-		"pngwutil.c",
-	]
-	thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
+    thirdparty_dir = "#thirdparty/libpng/"
+    thirdparty_sources = [
+        "png.c",
+        "pngerror.c",
+        "pngget.c",
+        "pngmem.c",
+        "pngpread.c",
+        "pngread.c",
+        "pngrio.c",
+        "pngrtran.c",
+        "pngrutil.c",
+        "pngset.c",
+        "pngtrans.c",
+        "pngwio.c",
+        "pngwrite.c",
+        "pngwtran.c",
+        "pngwutil.c",
+    ]
+    thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
 
-	env_png.add_source_files(env.drivers_sources, thirdparty_sources)
-	env_png.Append(CPPPATH = [thirdparty_dir])
+    env_png.add_source_files(env.drivers_sources, thirdparty_sources)
+    env_png.Append(CPPPATH = [thirdparty_dir])
 
-	# Currently .ASM filter_neon.S does not compile on NT.
-	import os
-	if ("neon_enabled" in env and env["neon_enabled"]) and os.name!="nt":
-		env_png.Append(CPPFLAGS = ["-DPNG_ARM_NEON_OPT=2"])
-		env_neon = env_png.Clone();
-		if "S_compiler" in env:
-			env_neon['CC'] = env['S_compiler']
-		neon_sources = []
-		neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/arm_init.c"))
-		neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/filter_neon_intrinsics.c"))
-		neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/filter_neon.S"))
-		env.drivers_sources += neon_sources
-	else:
-		env_png.Append(CPPFLAGS = ["-DPNG_ARM_NEON_OPT=0"])
+    # Currently .ASM filter_neon.S does not compile on NT.
+    import os
+    if ("neon_enabled" in env and env["neon_enabled"]) and os.name!="nt":
+        env_png.Append(CPPFLAGS = ["-DPNG_ARM_NEON_OPT=2"])
+        env_neon = env_png.Clone();
+        if "S_compiler" in env:
+            env_neon['CC'] = env['S_compiler']
+        neon_sources = []
+        neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/arm_init.c"))
+        neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/filter_neon_intrinsics.c"))
+        neon_sources.append(env_neon.Object(thirdparty_dir + "/arm/filter_neon.S"))
+        env.drivers_sources += neon_sources
+    else:
+        env_png.Append(CPPFLAGS = ["-DPNG_ARM_NEON_OPT=0"])
 
 # Godot source files
 env_png.add_source_files(env.drivers_sources, "*.cpp")
diff --git a/drivers/rtaudio/SCsub b/drivers/rtaudio/SCsub
index f0273dd421..704c4b6740 100644
--- a/drivers/rtaudio/SCsub
+++ b/drivers/rtaudio/SCsub
@@ -7,7 +7,7 @@ Import('env')
 # Thirdparty source files
 thirdparty_dir = "#thirdparty/rtaudio/"
 thirdparty_sources = [
-	"RtAudio.cpp",
+    "RtAudio.cpp",
 ]
 thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
 
diff --git a/drivers/zlib/SCsub b/drivers/zlib/SCsub
index 6a099aff52..928128e40c 100644
--- a/drivers/zlib/SCsub
+++ b/drivers/zlib/SCsub
@@ -8,17 +8,17 @@ Import('env')
 # No check here as already done in drivers/SCsub
 thirdparty_dir = "#thirdparty/zlib/"
 thirdparty_sources = [
-	"adler32.c",
-	"compress.c",
-	"crc32.c",
-	"deflate.c",
-	"infback.c",
-	"inffast.c",
-	"inflate.c",
-	"inftrees.c",
-	"trees.c",
-	"uncompr.c",
-	"zutil.c",
+    "adler32.c",
+    "compress.c",
+    "crc32.c",
+    "deflate.c",
+    "infback.c",
+    "inffast.c",
+    "inflate.c",
+    "inftrees.c",
+    "trees.c",
+    "uncompr.c",
+    "zutil.c",
 ]
 thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]