Apparently a root-level cfg does not go well with a root-level no_std

Stage and Cache build

See merge request redox-os/relibc!150

Workaround compilation errors

See merge request redox-os/relibc!149

Exec Functions (again) (again)

See merge request redox-os/relibc!144

Fix off-by-one error and remove utf8 check in mktemp

See merge request redox-os/relibc!148

Add the few last things to get gcc_complete working

See merge request !146

Add Gitlab CI

See merge request redox-os/relibc!140

implement mktemp

See merge request !145