ispc/ispc — pull request #315 by NicolasT (2012-07-04 12:53:00+00:00)
Title: Fix build on Fedora 17

Some modules require an include of unistd.h (e.g. for getcwd and isatty
definitions).

These changes were required to build successfully on a Fedora 17 system,
using GCC 4.7.0 & glibc-headers 2.15.