Bug#864364: freemat: toolbox missing diff() and run_tests()

[Graham Inggs]

Source: freemat
Version: debian/4.2+dfsg1-1_exp1

Hi Maintainer

The diff() and run_tests() functions are missing from the freemat toolbox.
The missing diff() function also causes the hist() function to fail.
The run_tests() function provides a convenient way for a user to run
the freemat tests after the binary packages are installed

The files toolbox/general/diff.m and toolbox/tests/run_tests/m are
present in upstream's tarball, but are missing from the DFSG tarball
due to the Files-Excluded field in debian/copyright.
I didn't see anything in these files that would make them non-free.
Please consider including them again.

Regards
Graham