fix documentation-related lintians As all license information is collected in the debian/copyright file, this patch avoids cluttering the user installation with duplicate information. This avoids the extra-license-file lintian. . This patch also avoids installing the zero-length NEWS file, avoiding another lintian. . It also remove the 'nobase' prefix from dist_doc_DATA to avoid installing files with duplicate entries (voacapl/voacapl).
