all: Prune trailing whitespace.

Prune trailing whitespace across the whole project (almost), done
automatically with:

    grep -IUrl --color "[[:blank:]]$" --exclude-dir=.git --exclude=*.exp |\
        xargs sed -i 's/[[:space:]]*$//'

Exceptions:
- Skip third-party code in lib/ and drivers/cc3100/
- Skip generated code in bluetooth_init_cc2564C_1.5.c
- Preserve command output whitespace in docs, eg:
  docs/esp8266/tutorial/repl.rst

Signed-off-by: Phil Howard <phil@gadgetoid.com>

tests/basics/int_big_or.py

@@ -3,7 +3,7 @@ print(0 | (1 << 80))
 a = 0xfffffffffffffffffffffffffffff
 print(a | (1 << 200))
 
-# test + + 
+# test + +
 
 print(0 | (1 << 80))
 print((1 << 80) | (1 << 80))
@@ -15,7 +15,7 @@ print(a | (1 << 200))
 print(a | a == 0)
 print(bool(a | a))
 
-# test - + 
+# test - +
 
 print((-1 << 80) | (1 << 80))
 print((-1 << 80) | 0)
@@ -25,7 +25,7 @@ print((-a) | (1 << 200))
 print((-a) | a == 0)
 print(bool((-a) | a))
 
-# test + - 
+# test + -
 
 print(0 | (-1 << 80))
 print((1 << 80) | (-1 << 80))
@@ -35,7 +35,7 @@ print(a | (-1 << 200))
 print(a | (-a) == 0)
 print(bool(a | (-a)))
 
-# test - - 
+# test - -
 
 print((-1 << 80) | (-1 << 80))