all: Reformat C and Python source code with tools/codeformat.py.

This is run with uncrustify 0.70.1, and black 19.10b0.

ports/esp8266/modules/_boot.py

@@ -1,13 +1,15 @@
 import gc
+
 gc.threshold((gc.mem_free() + gc.mem_alloc()) // 4)
 import uos
 from flashbdev import bdev
 
 if bdev:
     try:
-        uos.mount(bdev, '/')
+        uos.mount(bdev, "/")
     except:
         import inisetup
+
         inisetup.setup()
 
 gc.collect()