folly/wangle: temporarily disable compilation of Thens.cpp
folly/wangle: temporarily disable compilation of Thens.cpp

Summary:
This code fails to compile with clang:dev, so don't try for now.
* folly/wangle/test/Thens.cpp: Don't attempt to compile test/Thens.cpp.
See 4412111 for details.  Prompted by clang:dev+MSAN effort, 4090011.

Test Plan:
Run this:
fbconfig --clang --with-project-version clang:dev -r folly/wangle
fbmake runtests
Failed before, passes with this patch.

Reviewed By: hans@fb.com

Subscribers: folly@lists, fugalh

FB internal diff: D1354751

Tasks: 4090011, 4412111

loversInJapan/folly,clearlinux/folly,bsampath/folly,gaoyingie/folly,KSreeHarsha/folly,bikong2/folly,bobegir/folly,PoisonBOx/folly,brunomorishita/folly,doctaweeks/folly,bowlofstew/folly,shaobz/folly,upsoft/folly,sonnyhu/folly,cppfool/folly,yangjin-unique/folly,SammyK/folly,sakishum/folly,renyinew/folly,PoisonBOx/folly,rklabs/folly,bowlofstew/folly,brunomorishita/folly,stonegithubs/folly,romange/folly,rklabs/folly,nickhen/folly,loverszhaokai/folly,constantine001/folly,shaobz/folly,colemancda/folly,wildinto/folly,bsampath/folly,bobegir/folly,KSreeHarsha/folly,rklabs/folly,tomhughes/folly,kernelim/folly,reddit/folly,raphaelamorim/folly,KSreeHarsha/folly,bikong2/folly,sakishum/folly,Eagle-X/folly,Hincoin/folly,theiver9827/folly,Eagle-X/folly,theiver9827/folly,mqeizi/folly,loversInJapan/folly,reddit/folly,colemancda/folly,tempbottle/folly,fw1121/folly,loversInJapan/folly,romange/folly,PoisonBOx/folly,Eagle-X/folly,SeanRBurton/folly,cole14/folly,clearlylin/folly,cole14/folly,arg0/folly,sakishum/folly,ykarlsbrun/folly,bsampath/folly,juniway/folly,brunomorishita/folly,stonegithubs/folly,cppfool/folly,yangjin-unique/folly,wildinto/folly,renyinew/folly,shaobz/folly,clearlylin/folly,cppfool/folly,bikong2/folly,leolujuyi/folly,xzmagic/folly,lifei/folly,PPC64/folly,clearlinux/folly,project-zerus/folly,mqeizi/folly,nickhen/folly,renyinew/folly,lifei/folly,Orvid/folly,leolujuyi/folly,Eagle-X/folly,shaobz/folly,gavioto/folly,gavioto/folly,project-zerus/folly,facebook/folly,arg0/folly,raphaelamorim/folly,tempbottle/folly,CJstar/folly,hongliangzhao/folly,alexst07/folly,loverszhaokai/folly,stonegithubs/folly,arg0/folly,bikong2/folly,Orvid/folly,zhiweicai/folly,raphaelamorim/folly,wildinto/folly,bowlofstew/folly,facebook/folly,loversInJapan/folly,SeanRBurton/folly,constantine001/folly,facebook/folly,juniway/folly,Hincoin/folly,chjp2046/folly,loverszhaokai/folly,sakishum/folly,charsyam/folly,CJstar/folly,gavioto/folly,guker/folly,cole14/folly,ykarlsbrun/folly,theiver9827/folly,fw1121/folly,floxard/folly,stonegithubs/folly,tomhughes/folly,gaoyingie/folly,PoisonBOx/folly,hongliangzhao/folly,doctaweeks/folly,kernelim/folly,lifei/folly,Hincoin/folly,upsoft/folly,lifei/folly,kernelim/folly,ykarlsbrun/folly,constantine001/folly,charsyam/folly,tomhughes/folly,gaoyingie/folly,colemancda/folly,reddit/folly,chjp2046/folly,floxard/folly,juniway/folly,loversInJapan/folly,alexst07/folly,gavioto/folly,brunomorishita/folly,CJstar/folly,rklabs/folly,kernelim/folly,project-zerus/folly,hongliangzhao/folly,project-zerus/folly,constantine001/folly,SammyK/folly,bowlofstew/folly,gavioto/folly,alexst07/folly,cole14/folly,renyinew/folly,reddit/folly,loverszhaokai/folly,romange/folly,rklabs/folly,tomhughes/folly,bikong2/folly,SeanRBurton/folly,xzmagic/folly,CJstar/folly,bowlofstew/folly,clearlinux/folly,fw1121/folly,arg0/folly,cppfool/folly,doctaweeks/folly,yangjin-unique/folly,PPC64/folly,sonnyhu/folly,tempbottle/folly,doctaweeks/folly,SammyK/folly,romange/folly,loverszhaokai/folly,chjp2046/folly,upsoft/folly,leolujuyi/folly,doctaweeks/folly,juniway/folly,leolujuyi/folly,facebook/folly,upsoft/folly,zhiweicai/folly,fw1121/folly,lifei/folly,facebook/folly,bobegir/folly,guker/folly,clearlylin/folly,clearlylin/folly,tempbottle/folly,romange/folly,brunomorishita/folly,charsyam/folly,theiver9827/folly,bobegir/folly,xzmagic/folly,Orvid/folly,project-zerus/folly,nickhen/folly,charsyam/folly,Hincoin/folly,sonnyhu/folly,stonegithubs/folly,wildinto/folly,sonnyhu/folly,tomhughes/folly,theiver9827/folly,KSreeHarsha/folly,xzmagic/folly,Eagle-X/folly,bobegir/folly,SammyK/folly,zhiweicai/folly,gaoyingie/folly,guker/folly,wildinto/folly,PPC64/folly,yangjin-unique/folly,constantine001/folly,mqeizi/folly,tempbottle/folly,sakishum/folly,colemancda/folly,yangjin-unique/folly,raphaelamorim/folly,zhiweicai/folly,raphaelamorim/folly,cole14/folly,reddit/folly,SammyK/folly,nickhen/folly,cppfool/folly,kernelim/folly,bsampath/folly,CJstar/folly,leolujuyi/folly,Orvid/folly,alexst07/folly,sonnyhu/folly,colemancda/folly,alexst07/folly,mqeizi/folly,ykarlsbrun/folly,clearlinux/folly,hongliangzhao/folly,shaobz/folly,upsoft/folly,PoisonBOx/folly,floxard/folly,clearlinux/folly,PPC64/folly,arg0/folly,floxard/folly,Orvid/folly,zhiweicai/folly,guker/folly,chjp2046/folly,xzmagic/folly,mqeizi/folly,floxard/folly,hongliangzhao/folly,juniway/folly,Hincoin/folly,gaoyingie/folly,ykarlsbrun/folly,fw1121/folly,guker/folly,nickhen/folly,SeanRBurton/folly,bsampath/folly,PPC64/folly,SeanRBurton/folly,renyinew/folly,clearlylin/folly,chjp2046/folly,KSreeHarsha/folly