The license states that this is all LGPL-3, but the copyright headers of the source files say otherwise (and some are missing). Is this intentional, or should these all be under the same license? I've included licensecheck output below.

./test/gsc-provider-test.c: LGPL (v3 or later)
[Copyright: 2008 - perriman]

./test/gsc-documentwords-provider.h: LGPL (v3 or later)
[Copyright: 2007 - Jesús Barbero chuchiperriman@gmail.com]

./test/gsc-documentwords-provider.c: LGPL (v3 or later)
[Copyright: 2007 - Jesús Barbero chuchiperriman@gmail.com]

./test/completion-custom-widgets.c: GPL (v2 or later)
[Copyright: perriman 2007 chuchiperriman@gmail.com]

./test/completion-focus.c: GPL (v2 or later)
[Copyright: perriman 2007 chuchiperriman@gmail.com]

./test/gio-test.c: No copyright UNKNOWN

./test/gsc-provider-file.h: LGPL (v3 or later)
[Copyright: 2008 - perriman]

./test/completion-simple.c: GPL (v2 or later)
[Copyright: perriman 2007 chuchiperriman@gmail.com]

./test/gsc-provider-test.h: LGPL (v3 or later)
[Copyright: 2008 - perriman]

./test/gsc-provider-file.c: LGPL (v3 or later)
[Copyright: 2008 - perriman]

./gtksourcecompletion/gsc-completion-priv.h: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-trigger-autowords.c: LGPL (v3 or later)
[Copyright: 2007 - Jesús Barbero chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-proposal.c: LGPL (v2.1 or later)
[Copyright: 2008 - ChuchiPerriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-trigger-customkey.c: LGPL (with incorrect FSF address)
[Copyright: 2008 - perriman]

./gtksourcecompletion/gsc-provider.h: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-marshal.h: No copyright UNKNOWN

./gtksourcecompletion/gsc-completion.c: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-completion.h: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-trigger-customkey.h: LGPL (with incorrect FSF address)
[Copyright: 2008 - perriman]

./gtksourcecompletion/gsc-info.h: LGPL (v2.1 or later)
[Copyright: 2008 - ChuchiPerriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-info.c: LGPL (v2.1 or later)
[Copyright: 2008 - ChuchiPerriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-utils.h: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-trigger-userrequest.c: LGPL (with incorrect FSF address)
[Copyright: 2008 - perriman]

./gtksourcecompletion/gsc-trigger-userrequest.h: LGPL (with incorrect FSF address)
[Copyright: 2008 - perriman]

./gtksourcecompletion/gsc-utils.c: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-proposal.h: LGPL (v2.1 or later)
[Copyright: 2008 - ChuchiPerriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-trigger.c: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-trigger.h: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-provider.c: LGPL (v2.1 or later)
[Copyright: 2007 - Chuchiperriman chuchiperriman@gmail.com]

./gtksourcecompletion/gsc-i18n.h: No copyright UNKNOWN

./gtksourcecompletion/gsc-marshal.c: No copyright UNKNOWN

./gtksourcecompletion/gsc-trigger-autowords.h: LGPL (v3 or later)
[Copyright: 2007 - Jesús Barbero chuchiperriman@gmail.com]