Directory ./rnp_experimental contains a second copy of rnp which has been
obtained from:
https://github.com/rnpgp/rnp

[commit 4f5c4e6e9b9a895762290bf03ed342ea8e69bbd2]

rnp_experimental is used to test an unreleased RNP upstream snapshot
in Thunderbird Daily builds.

For licensing information, please refer to the included documentation.

Updates to this copy are managed by "mach vendor". The configuration file is
at rnp_experimental/moz.yaml. Unlike ./rnp, this copy does not update
MIN_RNP_VERSION in RNPLib.sys.mjs.

    > cd comm/third_party/rnp_experimental

    # validate the YAML config file
    > mach vendor -v ./moz.yaml
    ./moz.yaml: OK

    # update to a specific upstream commit
    > mach vendor -r <commit> ./moz.yaml

    # If there are patches to apply in moz.yaml, the process is a little different
    > mach vendor ./moz.yaml --patch-mode none
    # followed by
    > mach vendor ./moz.yaml --patch-mode only