Bug#711844: illegal-runtime-test-name on capital letters in test names

[Maarten Lankhorst <maarten.lankhorst@canonical.com>]

Package: lintian
Version: 2.5.13

When I was working on some packaging for xorg-integration-tests, I noticed that capital letters were not allowed
in a test name. I can run xorg-integration-tests just fine with them, so it looks like a bug in lintian, or the
autopkgtest documentation must be changed to explicitly allow capital letters in the test names.

$ lintian xorg-integration-tests_0.0.1.20130523-0ubuntu1.dsc
W: xorg-integration-tests source: illegal-runtime-test-name lib.libX11
W: xorg-integration-tests source: illegal-runtime-test-name lib.libXi

The original test binary names are libX11 and libXi in xorg-integration-tests.git, so it would make sense to
have the test names the same.