branch wip-container created (now eac501a)

[David Thompson]

davexunit pushed a change to branch wip-container
in repository guix.

        at  eac501a   scripts: Add 'container' subcommand.

This branch includes the following new commits:

       new  bc2f2c3   build: syscalls: Add additional mount flags.
       new  de61c59   build: syscalls: Add unmount flags.
       new  0a8a582   build: syscalls: Add mkdtemp!
       new  31fbabd   utils: Add call-with-temporary-directory.
       new  b5e8118   build: syscalls: Add clone syscall wrapper.
       new  1aba6fa   build: syscalls: Add setns syscall wrapper.
       new  f9b58e4   build: syscalls: Add pivot-root.
       new  5494dda   gnu: build: Add Linux container module.
       new  32d53e3   gnu: system: Move <file-system-mapping> into (gnu system 
file-systems).
       new  bd9fdf3   gnu: system: Move file-system->spec to (gnu system 
file-systems).
       new  6cd1fc8   gnu: system: Add Linux container module.
       new  80a4ac8   gnu: system: Add Linux container file systems.
       new  60f8132   scripts: system: Add 'container' action.
       new  ef7e7ad   scripts: environment: Add --container option.
       new  eac501a   scripts: Add 'container' subcommand.

The 15 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.