Replaces sandbox.Sandbox._ensure_directory() by sandbox.Sandbox.makedirs()
Implements sandbox.Sandbox.clone()
Lets sandbox.Sandbox run processes by the nobody user
Merge branch 'dev' into sandbox
Implements sandbox.Sandbox._process_fork()
Fixes a bug in sandbox.Sandbox._process_fork() while writing to the stdin
Fixes sandbox.Sandbox burning error on linux
Lets sandbox.Sandbox._process_fork() generate the evironment variables
Removes deprecated sandbox.Sandbox._process_subprocess()
Implements officialy sandbox.ProcessFeedback.killing_signal
Renames sandbox.ProcessFeedback's member returncode to return_code
Implements sandbox.Sandbox.user_name member
Implements test_sandbox.test_basic_stderr()
Tests sandbox.Sandbox.ended_correctly
Tests substring '//' in the sandbox.Sandbox.to_main_basis()'s return
Implements sandbox.Sandbox.process() stderr redirection on the stdout
Merge branch 'sandbox' into dev