[bugfix] Redshift fails on executing set search_path TO because of non quoted response
[bugfix] Redshift fails on executing set search_path TO because of non quoted response

quoting the response of show search_path
adding logging to all function

pass error instead of reading emtpy row on error in all function

fixes #277

db-migrate/node-db-migrate,andela-ooladayo/node-db-migrate,ViGo5190/node-db-migrate,ramakrishnan/node-db-migrate,SamuelBolduc/node-db-migrate,ror/node-db-migrate,cqricky/node-db-migrate,bwiggs/node-db-migrate,marbemac/node-db-migrate,chatter/node-db-migrate,MForMarlon/node-db-migrate,vertiman/node-db-migrate,db-migrate/node-db-migrate