This package is based on repacked sources instead of github released files for
two reasons:

1. Samples and SDK do not follow the DFSG requirements and are not necessary
for typical consumers of this package.

2. imgui is linked into the repository via git submodule, Githubs tar generator
does not resolve submodules however. You can find an excerpt from the issue [1]
below:
	Pavel Rojtberg (paroj), upstream developer, wrote:

		However, can you use the github tag instead of the tarball to get the
		imgui submodule?

		Several ogre based projects use imgui and it would be a pity if that
		feature would be missing from the debian base package.

		Alternatively, you could patch ogre downstream to include the imgui
		sources, that are referenced here:
		https://github.com/OGRECave/ogre/tree/master/Components/Overlay/src

3. imgui is not packaged separately as a dependency of OGRE at the request of
the upstream author who specifically requests that convenience copies of his
code be used due to API instability. [2]

[1] https://github.com/OGRECave/ogre/issues/1392
[2] https://github.com/ocornut/imgui/issues/2084
