This shell tries to apply the proper customization to the firefox sources.
1) creates a mozconfig file with the need configuration for amd64/i686
2) modifies confvars.sh
3) modifies the unofficial branding

Use:
  cd firefox_sources_dir
  /path/to/script/firefox_customizer.sh [amd64|i686]

After running the shell the firefox can be build with:
./match build && ./match package

When the build finish remember to copy the files from builddir/obj-firefox-[amd64|i686]/dist/firefoxESR/ to the appropiate svn dir