Update conda recipe for new conda

[TomAugspurger]

conda build ./conda.recipe/ --numpy 1.11 --python 3.6 -q --output

Recipe at /Users/taugspurger/Envs/pandas-dev/lib/python3.6/site-packages/pandas/conda.recipe uses numpy x.x.  This is deprecated as of conda-build 3.0, and will be removed in conda-build 4.0.  Please consider using variants with pin_run_as_build instead.  More info at https://conda.io/docs/building/variants.html#customizing-compatibility
WARNING:conda_build.metadata:Recipe at /Users/taugspurger/Envs/pandas-dev/lib/python3.6/site-packages/pandas/conda.recipe uses numpy x.x.  This is deprecated as of conda-build 3.0, and will be removed in conda-build 4.0.  Please consider using variants with pin_run_as_build instead.  More info at https://conda.io/docs/building/variants.html#customizing-compatibility
/Users/taugspurger/miniconda3/conda-bld/osx-64/pandas-0.21.0rc1-np111py36_43_ge38bd749d.tar.bz2

[bobhaffner]

Is anyone looking at this? If not, I can submit a PR.

My proposed changes. It doesn't throw a warning and it builds and installs

@@ -14,14 +14,14 @@ requirements:
   build:
     - python
     - cython
-    - numpy
+    - numpy x.x
     - setuptools
     - pytz
     - python-dateutil
 
   run:
     - python
-    - {{ pin_compatible('numpy') }}
+    - numpy x.x
     - python-dateutil
     - pytz
 

[TomAugspurger]

Seems reasonable to me.

[bobhaffner]

Good deal, I'll submit a PR