ARROW-952: fix regex include from C++ standard library
ARROW-952: fix regex include from C++ standard library

Author: Philipp Moritz <pcmoritz@gmail.com>

Closes #643 from pcmoritz/fix-regex-include and squashes the following commits:

d72e2c2 [Philipp Moritz] fix regex include from C++ standard library

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