scripts: run isort on scripts too

scripts/pyflakes

@@ -5,9 +5,11 b' Inspired by pyflakes/api.py and flake8/p'
 """
 
 import sys
+
 import pyflakes.api
 import pyflakes.messages
 
+
 class Reporter:
 
     warned = False

scripts/whitespacecleanup.sh

@@ -18,6 +18,6 b' hg mani | xargs chmod -x'
 hg loc 'set:!binary()&grep("^#!")&!(**_tmpl.py)&!(**/template**)' | xargs chmod +x
 
 # isort is installed from dev_requirements.txt
-isort --line-width 160 --wrap-length 160 --lines-after-imports 2 `hg loc '*.py'`
+hg loc 'set:!binary()&grep("^#!.*python")' '*.py' | xargs isort --line-width 160 --wrap-length 160 --lines-after-imports 2
 
 hg diff