Update to new nuget.exe and add logging and process exit code check. (#1773)
Update to new nuget.exe and add logging and process exit code check. (#1773)


adamsitnik/corefxlab,ericstj/corefxlab,joshfree/corefxlab,KrzysztofCwalina/corefxlab,stephentoub/corefxlab,ericstj/corefxlab,VSadov/corefxlab,joshfree/corefxlab,VSadov/corefxlab,stephentoub/corefxlab,benaadams/corefxlab,dotnet/corefxlab,VSadov/corefxlab,adamsitnik/corefxlab,VSadov/corefxlab,benaadams/corefxlab,ahsonkhan/corefxlab,stephentoub/corefxlab,VSadov/corefxlab,ericstj/corefxlab,whoisj/corefxlab,whoisj/corefxlab,ahsonkhan/corefxlab,stephentoub/corefxlab,ericstj/corefxlab,VSadov/corefxlab,KrzysztofCwalina/corefxlab,ericstj/corefxlab,tarekgh/corefxlab,tarekgh/corefxlab,dotnet/corefxlab,stephentoub/corefxlab,stephentoub/corefxlab,ericstj/corefxlab