perl6/nqp — pull request #86 by hoelzro (2013-03-20 13:35:26+00:00)
Title: Expose errno and POSIX errno values to NQP

This pull request adds `nqp::x_posixerrno` (which returns the current value of `errno`) as well as a series of constants corresponding to possible error values for `errno`, for example `pir::const::POSIX_EEXIST`.