ARROW-847: Specify BUILD_BYPRODUCTS for gtest
ARROW-847: Specify BUILD_BYPRODUCTS for gtest

Author: Uwe L. Korn <uwelk@xhochy.com>

Closes #561 from xhochy/ARROW-847 and squashes the following commits:

e8d5439 [Uwe L. Korn] ARROW-847: Specify BUILD_BYPRODUCTS for gtest

renesugar/arrow,icexelloss/arrow,yufeldman/arrow,majetideepak/arrow,dremio/arrow,cpcloud/arrow,renesugar/arrow,laurentgo/arrow,renesugar/arrow,itaiin/arrow,siddharthteotia/arrow,pcmoritz/arrow,wesm/arrow,siddharthteotia/arrow,itaiin/arrow,renesugar/arrow,xhochy/arrow,laurentgo/arrow,kou/arrow,cpcloud/arrow,renesugar/arrow,apache/arrow,siddharthteotia/arrow,yufeldman/arrow,pcmoritz/arrow,majetideepak/arrow,dremio/arrow,yufeldman/arrow,jeffknupp/arrow,pcmoritz/arrow,NonVolatileComputing/arrow,tebeka/arrow,yufeldman/arrow,itaiin/arrow,icexelloss/arrow,dremio/arrow,xhochy/arrow,wagavulin/arrow,majetideepak/arrow,NonVolatileComputing/arrow,icexelloss/arrow,wesm/arrow,pcmoritz/arrow,laurentgo/arrow,wagavulin/arrow,xhochy/arrow,majetideepak/arrow,wesm/arrow,cpcloud/arrow,renesugar/arrow,cpcloud/arrow,majetideepak/arrow,icexelloss/arrow,wesm/arrow,laurentgo/arrow,siddharthteotia/arrow,siddharthteotia/arrow,pcmoritz/arrow,renesugar/arrow,NonVolatileComputing/arrow,majetideepak/arrow,wesm/arrow,apache/arrow,pcmoritz/arrow,laurentgo/arrow,kou/arrow,pcmoritz/arrow,apache/arrow,pcmoritz/arrow,wagavulin/arrow,tebeka/arrow,kou/arrow,cpcloud/arrow,majetideepak/arrow,dremio/arrow,renesugar/arrow,jeffknupp/arrow,majetideepak/arrow,kou/arrow,icexelloss/arrow,pcmoritz/arrow,NonVolatileComputing/arrow,icexelloss/arrow,wesm/arrow,NonVolatileComputing/arrow,laurentgo/arrow,xhochy/arrow,renesugar/arrow,icexelloss/arrow,wesm/arrow,kou/arrow,NonVolatileComputing/arrow,dremio/arrow,NonVolatileComputing/arrow,tebeka/arrow,cpcloud/arrow,yufeldman/arrow,itaiin/arrow,laurentgo/arrow,wagavulin/arrow,laurentgo/arrow,laurentgo/arrow,majetideepak/arrow,NonVolatileComputing/arrow,apache/arrow,dremio/arrow,kou/arrow,wesm/arrow,wagavulin/arrow,dremio/arrow,cpcloud/arrow,renesugar/arrow,itaiin/arrow,cpcloud/arrow,xhochy/arrow,kou/arrow,icexelloss/arrow,pcmoritz/arrow,laurentgo/arrow,cpcloud/arrow,wagavulin/arrow,apache/arrow,apache/arrow,jeffknupp/arrow,wagavulin/arrow,tebeka/arrow,majetideepak/arrow,pcmoritz/arrow,siddharthteotia/arrow,wagavulin/arrow,tebeka/arrow,laurentgo/arrow,siddharthteotia/arrow,NonVolatileComputing/arrow,wagavulin/arrow,renesugar/arrow,yufeldman/arrow,cpcloud/arrow,siddharthteotia/arrow,cpcloud/arrow,jeffknupp/arrow,icexelloss/arrow,wesm/arrow,xhochy/arrow,majetideepak/arrow,jeffknupp/arrow,apache/arrow,cpcloud/arrow,wesm/arrow,kou/arrow,dremio/arrow,yufeldman/arrow,icexelloss/arrow,NonVolatileComputing/arrow,NonVolatileComputing/arrow,siddharthteotia/arrow,wesm/arrow,siddharthteotia/arrow,renesugar/arrow,apache/arrow,wagavulin/arrow,apache/arrow,majetideepak/arrow,yufeldman/arrow,pcmoritz/arrow,xhochy/arrow,apache/arrow,tebeka/arrow,itaiin/arrow,itaiin/arrow,xhochy/arrow,siddharthteotia/arrow,icexelloss/arrow,itaiin/arrow,xhochy/arrow,majetideepak/arrow,itaiin/arrow,kou/arrow,yufeldman/arrow,xhochy/arrow,xhochy/arrow,pcmoritz/arrow,dremio/arrow,apache/arrow,tebeka/arrow,renesugar/arrow,kou/arrow,dremio/arrow,itaiin/arrow,majetideepak/arrow,wesm/arrow,kou/arrow,wesm/arrow,itaiin/arrow,yufeldman/arrow,jeffknupp/arrow,dremio/arrow,laurentgo/arrow,xhochy/arrow,icexelloss/arrow,itaiin/arrow,apache/arrow,jeffknupp/arrow,apache/arrow,laurentgo/arrow,pcmoritz/arrow,icexelloss/arrow,jeffknupp/arrow,itaiin/arrow,yufeldman/arrow,xhochy/arrow,xhochy/arrow,kou/arrow,jeffknupp/arrow,wesm/arrow,cpcloud/arrow,kou/arrow,icexelloss/arrow,wagavulin/arrow,majetideepak/arrow,tebeka/arrow,laurentgo/arrow,renesugar/arrow,apache/arrow,jeffknupp/arrow,jeffknupp/arrow,cpcloud/arrow,xhochy/arrow,tebeka/arrow,itaiin/arrow,tebeka/arrow,pcmoritz/arrow,kou/arrow,wagavulin/arrow,itaiin/arrow,renesugar/arrow,laurentgo/arrow