BLD: use newer versions of numexpr with numpy 1.8
Merge pull request #6141 from jreback/numexpr

BLD: use newer versions of numexpr with numpy 1.8
BUG: Bug in DataFrame construction with recarray and non-ns datetime dtype (GH6140)
Merge pull request #6142 from jreback/from_records

BUG: Bug in DataFrame construction with recarray and non-ns datetime dtype (GH6140)
Merge branch 'master' of https://github.com/pydata/pandas