Fix mixed tab/whitespace in build files

editor/SCsub

@@ -351,7 +351,7 @@ if (env["tools"] == "yes"):
     reg_exporters = 'void register_exporters() {\n'
     for e in env.platform_exporters:
         env.editor_sources.append("#platform/" + e + "/export/export.cpp")
-	reg_exporters += '\tregister_' + e + '_exporter();\n'
+        reg_exporters += '\tregister_' + e + '_exporter();\n'
         reg_exporters_inc += '#include "platform/' + e + '/export/export.h"\n'
     reg_exporters += '}\n'
     f = open("register_exporters.gen.cpp", "wb")

main/SCsub

@@ -18,7 +18,7 @@ def make_splash(target, source, env):
     g.write("static const Color boot_splash_bg_color = Color(1,1,1,1);\n");
     g.write("static const unsigned char boot_splash_png[] = {\n")
     for i in range(len(buf)):
-	g.write(str(ord(buf[i])) + ",\n")
+        g.write(str(ord(buf[i])) + ",\n")
     g.write("};\n")
     g.write("#endif")
 
@@ -37,7 +37,7 @@ def make_app_icon(target, source, env):
     g.write("#define APP_ICON_H\n")
     g.write("static const unsigned char app_icon_png[] = {\n")
     for i in range(len(buf)):
-	g.write(str(ord(buf[i])) + ",\n")
+        g.write(str(ord(buf[i])) + ",\n")
     g.write("};\n")
     g.write("#endif")