This package uses quilt to manage all modifications to the upstream source.
For further information, see /usr/share/doc/quilt/README.source.

The difference between upstream tarball and dfsg tarball is

- the removal of the generated

  Documents/BrlAPIref/html

- the removal of the non-free

  DOS/cwsdpmi.exe
  Windows/msvcr90.dll

- the removal of the file without source

  Android/Application/libs/support-v4-19.1.0.jar