Added function to retrieve date in RFC822 format in datetime builtin
Added function to retrieve date in RFC822 format in datetime builtin

bhatfield/alloy,jppope/alloy,bhatfield/alloy,indera/alloy,FokkeZB/alloy,4talesa/alloy,indera/alloy,mobilehero/adamantium,NadsonFernando/alloy,jvkops/alloy,brentonhouse/brentonhouse.alloy,brentonhouse/brentonhouse.alloy,brentonhouse/brentonhouse.alloy,xavierlacot/alloy,WY08271/alloy,4talesa/alloy,NadsonFernando/alloy,xavierlacot/alloy,xavierlacot/alloy,bhatfield/alloy,mobilehero/adamantium,FokkeZB/alloy,jvkops/alloy,jppope/alloy,FokkeZB/alloy,4talesa/alloy,WY08271/alloy,jvkops/alloy,indera/alloy,mobilehero/adamantium,NadsonFernando/alloy,WY08271/alloy,jppope/alloy