WIP: Errno::ECHILD thrown from Process.waitpid
Let's untag one of specs and see what happens!
Errno::* are subclasses of SystemCallError
Add an Errno generator, move some code out of try
Merge remote-tracking branch 'origin/master' into errno-echild
Process#{wait,wait2,waitall}
Merge error_for_oserror and errno_for_oserror
Enumerable#slice_before from rubinius
replace with *args
Merge pull request #737 from kostya/slice_before

Enumerable#slice_before from rubinius
Minimise the try block in error_for_oserror
allocate does not accept any arguments
Merge pull request #732 from jstepien/errno-echild

Errno::ECHILD thrown from Process.waitpid, some Process methods
raise correct errno subclass in more situations
these should pass
fixed test for the bright new future!
Don't use mirrors anymore, we have stuff!
THE FUTURE
Merge pull request #739 from kostya/allocate

allocate does not accept any arguments
stuff can happen here too