Log Message:
lang/python27: update to 2.7.14

Python 2.7.14:

Core and Builtins
- bpo-30657: Fixed possible integer overflow in PyString_DecodeEscape.
- bpo-27945: Fixed various segfaults with dict when input collections are
  mutated during searching, inserting or comparing.  Based on patches by
  Duane Griffin and Tim Mitchell.
- bpo-25794: Fixed type.__setattr__() and type.__delattr__() for
  non-interned or unicode attribute names.  Based on patch by Eryk Sun.
- bpo-29935: Fixed error messages in the index() method of tuple and list
  when pass indices of wrong type.
- bpo-28598: Support __rmod__ for subclasses of str being called before
  str.__mod__.  Patch by Martijn Pieters.
- bpo-29602: Fix incorrect handling of signed zeros in complex constructor for
  complex subclasses and for inputs having a __complex__ method. Patch
  by Serhiy Storchaka.
- bpo-29347: Fixed possibly dereferencing undefined pointers
  when creating weakref objects.
- Issue 14376: Allow sys.exit to accept longs as well as ints. Patch
  by Gareth Rees.
- Issue 29028: Fixed possible use-after-free bugs in the subscription of the
  buffer object with custom index object.
- Issue 29145: Fix overflow checks in string, bytearray and unicode.
  Patch by jan matejek and Xiang Zhang.
- Issue 28932: Do not include <sys/random.h> if it does not exist.

Extension Modules
- bpo-31170: Update vendorized expat to 2.2.4.
- Issue 29169: Update zlib to 1.2.11.