PARQUET-653: Build conda artifacts with -static-libstdc++ again
PARQUET-653: Build conda artifacts with -static-libstdc++ again

The final stage of this work will be to move dev/testing packaging builds to centos6 images on Circle CI (this may be possible in Travis -- which allows you to use docker -- but easier with Circle CI)

Author: Wes McKinney <wesm@apache.org>

Closes #133 from wesm/PARQUET-653 and squashes the following commits:

80e6010 [Wes McKinney] Build conda artifacts with -static-libstdc++ again

flode/parquet-cpp,MaxRis/parquet-cpp,MaxRis/parquet-cpp,advancedxy/parquet-cpp,majetideepak/parquet-cpp,wesm/parquet-cpp,MaxRis/parquet-cpp,wesm/parquet-cpp,itaiin/parquet-cpp,itaiin/parquet-cpp,apache/parquet-cpp,wesm/parquet-cpp,itaiin/parquet-cpp,flode/parquet-cpp,apache/parquet-cpp,apache/parquet-cpp,advancedxy/parquet-cpp,wesm/parquet-cpp,majetideepak/parquet-cpp,itaiin/parquet-cpp,advancedxy/parquet-cpp,apache/parquet-cpp,itaiin/parquet-cpp,advancedxy/parquet-cpp,advancedxy/parquet-cpp,majetideepak/parquet-cpp,itaiin/parquet-cpp,flode/parquet-cpp,flode/parquet-cpp,MaxRis/parquet-cpp,wesm/parquet-cpp,majetideepak/parquet-cpp,majetideepak/parquet-cpp,MaxRis/parquet-cpp,apache/parquet-cpp,advancedxy/parquet-cpp,apache/parquet-cpp,majetideepak/parquet-cpp,MaxRis/parquet-cpp,flode/parquet-cpp,wesm/parquet-cpp