Pedestal:  Axe long-obsolete View::Initializer
Genie:  Axe obsolete nested Initalizer types
Genie:  Implement stream methods for pipes
Genie:  Axe pipe poll/read/write overrides
Genie:  Simplify setting pipe open flags
Genie:  Unify Pipe{In,Out}Handle to PipeEndHandle
Genie:  Derive PipeEndHandle from vfs::filehandle
Merge branch 'pipe-unstreamed'
Genie:  Pass vfs::node& to make Handle filehandle