This reverts commit 778aa6cf.

Bug 41668: Port some updater patches to Base Browser

Move the check on the update package version to this other commit.

Kathleen Brade authored Dec 17, 2014 and Pier Angelo Vendrame committed Mar 10, 2023

Allow using NSS on all platforms for checking MAR signatures (instead
  of using OS-native APIs, the default on Mac OS and Windows).
  So that the NSS and NSPR libraries the updater depends on can be
  found at runtime, we add the firefox directory to the shared library
  search path on macOS.
  On Linux, rpath is used to solve that problem, but that approach
  won't work on macOS because the updater executable is copied during
  the update process to a location that can vary.

Kathleen Brade authored May 20, 2016 and Pier Angelo Vendrame committed Mar 10, 2023

This is a partial revert of commit f1241db6.

Revert most changes from Mozilla Bug 862173 "don't verify mar file hash
when using mar signing to verify the mar file (lessens main thread I/O)."

We kept the addition to the AppConstants API in case other JS code
references it in the future.

Bug 41668: Port some updater patches to Base Browser

Modernize the way to compute the hash digest.

Bug 41668: Port some updater patches to Base Browser

Use a configure-time flag to force using NSS for MARs signatures.

Bug 41668: Port some updater patches to Base Browser