PARQUET-1029: [C++] Some extern template symbols not being exported in gcc
PARQUET-1029: [C++] Some extern template symbols not being exported in gcc

Extern template visibility contributes to be a mystery to me, but this fixes the regression from PARQUET-991.

cc @saatvikshah1994

Author: Wes McKinney <wes.mckinney@twosigma.com>

Closes #352 from wesm/PARQUET-1029 and squashes the following commits:

3f52852 [Wes McKinney] Some extern template symbols not being exported in gcc

Change-Id: Icd71f67290c25de8f9fc38153b48a70e20bfa438

pcmoritz/arrow,kou/arrow,icexelloss/arrow,pcmoritz/arrow,icexelloss/arrow,cpcloud/arrow,itaiin/arrow,laurentgo/arrow,xhochy/arrow,tebeka/arrow,majetideepak/arrow,apache/arrow,tebeka/arrow,itaiin/arrow,renesugar/arrow,icexelloss/arrow,renesugar/arrow,pcmoritz/arrow,majetideepak/arrow,itaiin/arrow,majetideepak/arrow,xhochy/arrow,renesugar/arrow,majetideepak/arrow,itaiin/arrow,wesm/arrow,itaiin/arrow,kou/arrow,itaiin/arrow,tebeka/arrow,xhochy/arrow,xhochy/arrow,apache/arrow,icexelloss/arrow,laurentgo/arrow,kou/arrow,renesugar/arrow,wesm/arrow,pcmoritz/arrow,pcmoritz/arrow,icexelloss/arrow,xhochy/arrow,kou/arrow,laurentgo/arrow,wesm/arrow,pcmoritz/arrow,majetideepak/arrow,tebeka/arrow,cpcloud/arrow,wesm/arrow,laurentgo/arrow,kou/arrow,laurentgo/arrow,kou/arrow,renesugar/arrow,laurentgo/arrow,itaiin/arrow,renesugar/arrow,kou/arrow,renesugar/arrow,itaiin/arrow,cpcloud/arrow,icexelloss/arrow,kou/arrow,cpcloud/arrow,xhochy/arrow,pcmoritz/arrow,xhochy/arrow,cpcloud/arrow,majetideepak/arrow,renesugar/arrow,laurentgo/arrow,apache/arrow,pcmoritz/arrow,wesm/arrow,apache/arrow,xhochy/arrow,apache/arrow,xhochy/arrow,tebeka/arrow,renesugar/arrow,pcmoritz/arrow,kou/arrow,renesugar/arrow,itaiin/arrow,kou/arrow,itaiin/arrow,icexelloss/arrow,cpcloud/arrow,laurentgo/arrow,laurentgo/arrow,wesm/arrow,tebeka/arrow,icexelloss/arrow,cpcloud/arrow,xhochy/arrow,itaiin/arrow,laurentgo/arrow,cpcloud/arrow,wesm/arrow,xhochy/arrow,cpcloud/arrow,majetideepak/arrow,laurentgo/arrow,wesm/arrow,itaiin/arrow,icexelloss/arrow,tebeka/arrow,icexelloss/arrow,laurentgo/arrow,apache/arrow,laurentgo/arrow,cpcloud/arrow,tebeka/arrow,apache/arrow,laurentgo/arrow,pcmoritz/arrow,cpcloud/arrow,apache/arrow,majetideepak/arrow,renesugar/arrow,apache/arrow,apache/arrow,xhochy/arrow,cpcloud/arrow,majetideepak/arrow,renesugar/arrow,apache/arrow,renesugar/arrow,icexelloss/arrow,apache/arrow,itaiin/arrow,pcmoritz/arrow,tebeka/arrow,renesugar/arrow,majetideepak/arrow,wesm/arrow,icexelloss/arrow,renesugar/arrow,kou/arrow,xhochy/arrow,icexelloss/arrow,wesm/arrow,apache/arrow,xhochy/arrow,apache/arrow,pcmoritz/arrow,majetideepak/arrow,majetideepak/arrow,kou/arrow,pcmoritz/arrow,wesm/arrow,cpcloud/arrow,tebeka/arrow,icexelloss/arrow,kou/arrow,wesm/arrow,pcmoritz/arrow,itaiin/arrow,kou/arrow,itaiin/arrow,wesm/arrow,cpcloud/arrow,wesm/arrow,majetideepak/arrow,majetideepak/arrow,xhochy/arrow,majetideepak/arrow,pcmoritz/arrow,laurentgo/arrow