fix #6027

only normalize identifiers during parsing; not all constructed symbols
Merge branch 'master' of github.com:JuliaLang/julia
Clarify error for openblas cross compile arch
Add @nif
Cartesian: improve generated expressions (evaluate more conditionals at parsing time)
Merge pull request #6032 from ivarne/patch-1

Clarify error for openblas cross compile arch
Fix bug in more-than-6D SubArray indexing
Fix #6036
Merge pull request #5 from JuliaLang/master

rebase to 40fdf3e