Log Message:
Updated py-numexpr to 2.6.0.

Fix CPU detection patch while here.

Changes from 2.5.2 to 2.6.0
===========================

- Introduced a new re_evaluate() function for re-evaluating the
  previous executed array expression without any check.  This is meant
  for accelerating loops that are re-evaluating the same expression
  repeatedly without changing anything else than the operands.  If
  unsure, use evaluate() which is safer.

- The BLOCK_SIZE1 and BLOCK_SIZE2 constants have been re-checked in
  order to find a value maximizing most of the benchmarks in bench/
  directory.  The new values (8192 and 16 respectively) give somewhat
  better results (~5%) overall.  The CPU used for fine tuning is a
  relatively new Haswell processor (E3-1240 v3).

- The '--name' flag for `setup.py` returning the name of the package
  is honored now (issue #215).

Changes from 2.5.1 to 2.5.2
===========================

- conj() and abs() actually added as VML-powered functions, preventing
  the same problems than log10() before (PR #212).  Thanks to Tom Kooij
  for the fix!

Changes from 2.5 to 2.5.1
=========================

- Fix for log10() and conj() functions.  These produced wrong results
  when numexpr was compiled with Intel's MKL (which is a popular build
  since Anaconda ships it by default) and non-contiguous data (issue
  #210).  Thanks to Arne de Laat and Tom Kooij for reporting and
  providing a nice test unit.

- Fix that allows numexpr-powered apps to be profiled with pympler.
  Thanks to @nbecker.

Changes from 2.4.6 to 2.5
=========================

- Added locking for allowing the use of numexpr in multi-threaded
  callers (this does not prevent numexpr to use multiple cores
  simultaneously).  (PR #199, Antoine Pitrou, PR #200, Jenn Olsen).

- Added new min() and max() functions (PR #195, CJ Carey).

Changes from 2.4.5 to 2.4.6
===========================

- Fixed some UserWarnings in Solaris (PR #189, Graham Jones).

- Better handling of MSVC defines. (#168, Francesc Alted).

Changes from 2.4.4 to 2.4.5
===========================

- Undone a 'fix' for a harmless data race.  (#185 Benedikt Reinartz,
  Francesc Alted).

- Ignore NumPy warnings (overflow/underflow, divide by zero and
  others) that only show up in Python3.  Masking these warnings in
  tests is fine because all the results are checked to be
  valid. (#183, Francesc Alted).

Changes from 2.4.3 to 2.4.4
===========================

- Fix bad #ifdef for including stdint on Windows (PR #186, Mike Sarahan).

Changes from 2.4.3 to 2.4.4
===========================

* Honor OMP_NUM_THREADS as a fallback in case NUMEXPR_NUM_THREADS is not
  set. Fixes #161. (PR #175, Stefan Erb).

* Added support for AppVeyor (PR #178 Andrea Bedini)

* Fix to allow numexpr to be imported after eventlet.monkey_patch(),
  as suggested in #118 (PR #180 Ben Moran).

* Fix harmless data race that triggers false positives in ThreadSanitizer.
  (PR #179, Clement Courbet).

* Fixed some string tests on Python 3 (PR #182, Antonio Valentino).

Changes from 2.4.2 to 2.4.3
===========================

* Comparisons with empty strings work correctly now.  Fixes #121 and
  PyTables #184.

Changes from 2.4.1 to 2.4.2
===========================

* Improved setup.py so that pip can query the name and version without
  actually doing the installation.  Thanks to Joris Borgdorff.

Changes from 2.4 to 2.4.1
=========================

* Added more configuration examples for compiling with MKL/VML
  support.  Thanks to Davide Del Vento.

* Symbol MKL_VML changed into MKL_DOMAIN_VML because the former is
  deprecated in newer MKL.  Thanks to Nick Papior Andersen.

* Better determination of methods in `cpuinfo` module.  Thanks to Marc
  Jofre.

* Improved NumPy version determination (handy for 1.10.0).  Thanks
  to Åsmund Hjulstad.

* Benchmarks run now with both Python 2 and Python 3.  Thanks to Zoran
  Plesivčak.

Changes from 2.3.1 to 2.4
=========================

* A new `contains()` function has been added for detecting substrings
  in strings.  Only plain strings (bytes) are supported for now.  See
  PR #135 and ticket #142.  Thanks to Marcin Krol.

* New version of setup.py that allows better management of NumPy
  dependency.  See PR #133.  Thanks to Aleks Bunin.

Changes from 2.3 to 2.3.1
=========================

* Added support for shift-left (<<) and shift-right (>>) binary \ 
operators.
  See PR #131. Thanks to fish2000!

* Removed the rpath flag for the GCC linker, because it is probably
  not necessary and it chokes to clang.