Merge "Enable the "not-callable" pylint check"

diff --cc .pylintrc
index 595c3e53e684b29d46b27d491c1da42fcbb3036c,28f6f7940f0927d7100fe40911d7eaf0678c6f3c..ad9c8211bc8f39083c928d2bfa4cc8740682f591
--- 1/.pylintrc
--- 2/.pylintrc
+++ b/.pylintrc
@@@ -24,11 -24,13 +24,10 @@@ disable
   no-member,
   no-method-argument,
   no-self-argument,
-  not-callable,
   no-value-for-parameter,
   super-on-old-class,
 - too-few-format-args,
  # "W" Warnings for stylistic problems or minor programming issues
   abstract-method,
 - anomalous-backslash-in-string,
 - anomalous-unicode-escape-in-string,
   arguments-differ,
   attribute-defined-outside-init,
   bad-builtin,