New 102.4.0 test branch and binaries

[Ruben Rodriguez]

Hi everybody, I've been back at work on the v102 series, and it is ready 
for testing. The changes can be found at
https://git.savannah.gnu.org/cgit/gnuzilla.git/log/?h=102.4.0
and the generated source and binary tarballs at
https://icecat.trisquel.org/102.4.0/

The changes from 102.2 are:

 * Disable "More from Mozilla" tab in settings
 * Improved buildscripts for binaries and langpacks
 * Change default libreddit instance in privacy-redirect
 * Updated "LibrifyJS: libgen.me" extension, removed 
disable-polymer-youtube as it is unmaintained, and removed torproxy 
extension so Tor integration is not preinstalled.

Please test and comment, if no problems are found in a few days I'll 
publish to the main branch and to ftp.gnu.org

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