Raised core revision

Ignore-this: a0b4f131bad530aba8cf84cee3a3a9ed

darcs-hash:20120828111319-56b4d-8882afd0309190f4f78b41d0c4d5aa106bdf3631
Fixed incorrect header name representation

Ignore-this: d0436047122383d1489d825161bad90b

darcs-hash:20120830091922-56b4d-d3b2f38cd4f633a175d4be5d690d0861139a9489