sysutils/porch: update to v1.2

Highlights:
 - Ability to signal processes
 - Configuration of signal masks and ignored/caught signals
 - Improved porch(3lua) to better document the process/term interface
 - Enhanced eof() to invoke a callback on termination (orch(5)) with a
    wait status object or return it (porch(3lua))

sysutils/porch: update to v1.1

Highlights:
 - porchgen(1) to generate starter orch(5) scripts
 - rporch(1) to execute a local orch(5) script against a remote machine
 - Added a pipe() command to inject output from another program

sysutils/porch: update to v1.0

Highlights:
 - Now tries to avoid error/assert as much as possible to avoid aborting
   on lib
    users, which could handle the situation more gracefully
 - Allows more flexibility in run_script(), so one can pass an
   already-open file
    and run it.
 - Improved documentation with linting in CI
 - Wrote porch(3lua) to document the direct-execution interface

sysutils/orch: update to 0.4

Highlights:
 - Many bug fixes
 - Improved ipc interface for more robust program startup
 - Cleaner lib interface to allow use in lua scripts
 - Multi-match support within a single match()
 - Terminal resize support

While we're here, orch has been renamed to porch upstream to deconflict
with a pre-existing rust framework.  The scripts are still called
(orch)estration scripts.

This change also switches to the new `check-install` target to sanity
test our install layout.