This package uses the upstream git repository as its source because the release
version is really too old.
Original source tarball is created by cloning the upstream git repository
(branch master), removing all git-specific files, and removing a directory in
which there are files with an unclear copyright (anyway, they are useless for
us) and a PDF containing an help guide (we can't ship it, since there isn't its
source.
All changes to the upstream code are maintained as quilt patches and can be
found in debian/patches.
To get the full patched source you need to perform the following operation:

1. Clone the upstream git branch:

    git clone git@github.com:pencil2d/pencil.git pencil2d

2. Remove the unwanted "util" directory:

    rm -rf pencil2d/util

3. Remove the bundled zlib library:

   rm -rf pencil2d/3rdlib/zlib

4. Create a tarball, excluding git-specific files, using as name for the file
   the date of the last commit:

   tar --exclude-vcs -cjf pencil2d_0.5.4~git20140607+dfsg.orig.tar.bz2 pencil2d

5. Use the resulting orig.tar.gz tarball with the debian directory and patches
   contained within to build your package. The result will be equal to the
   package uploaded into Debian.
