Log Message:
(sysutils/R-processx) Updated 3.5.2 to 3.8.0

# processx 3.8.0

* processx error stacks are better now. They have ANSI hyperlinks for
  function calls to their manual pages, and they also print operators
  better.

* processx now does not mark standard streams as close-on-exec on Unix,
  as this causes problems when calling `system()` from an R subprocess
  (https://github.com/r-lib/callr/issues/236).

# processx 3.7.0

* New functions for creating portable FIFOs and Unix socket connections.
  See `conn_create_fifo()`, `conn_create_unix_socket()` and
  `vignettes/internals.Rmd` for documentation. These functions are currently
  experimental.

# processx 3.6.1

* processx now closes file unneeded file descriptors when redirecting
  the standard output and error, in the client file.

* processx errors now do not have `rlang_error` and `rlang_trace` classes,
  because they are actually not compatible with rlang errors and traces.

# processx 3.6.0

* processx now gives better error messages, and better stack traces.

# processx 3.5.3

* `run()` now sets `stderr` to `NULL` in the result (instead of an empty
  string), if the standard error was redirected to the standard output.
  This also fixes an error when interrupting a `run()` with a redirected
  standard error.

* processx now does not fail if the current working directory contains
  a non-ASCII character on Windows, and `getwd()` returns a short path
  for it (#313).