firefox: Don't rely on file extension to identify dynamic libraries (#488112)

          # Maybe related to how omni.ja file is mmapped into memory. See:

          # https://github.com/mozilla/gecko-dev/blob/b1662b447f306e6554647914090d4b73ac8e1664/modules/libjar/nsZipArchive.cpp#L204

          #

          # The *.dylib files are copied, otherwise some basic functionality, e.g. Crypto API, is broken.

          for file in $(find . -name "omni.ja" -o -name "*.dylib"); do

          # Mach-O shared libraries must be copied, not symlinked, otherwise some

          # functionality like the Crypto API and audio decoding is broken.

          find . -type l -print0 |

          while IFS= read -r -d "" file; do

            case "$(basename "$file")" in

              omni.ja)

                ;;

              *)

                # Copy if the symlink resolves to a Mach-O dylib

                otool -l "$file" 2>/dev/null | grep -q 'LC_ID_DYLIB' || continue

                ;;

            esac

            rm "$file"

            cp "${browser}/${appPath}/$file" "$file"

            cp "${browser}/${appPath}/''${file#./}" "$file"

          done

          # Copy any embedded .app directories; plugin-container fails to start otherwise.