- check build dependencies
- fix help2man-generated man pages
- get -doc packages back to work

Now running lintian vienna-rna_2.4.14+dfsg-1_amd64.changes ...
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W: vienna-rna-dbgsym: debug-file-with-no-debug-symbols usr/lib/debug/.build-id/01/edd12287f2877a016ac366754d7d079cab1038.debug
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W: vienna-rna-dbgsym: debug-file-with-no-debug-symbols usr/lib/debug/.build-id/ec/fd69940f242530dd063c51d80d24d208e8a7ea.debug
W: vienna-rna-dbgsym: debug-file-with-no-debug-symbols usr/lib/debug/.build-id/fd/9945d256a20906dbb9601280b0e805643b0b78.debug
W: vienna-rna: manpage-has-useless-whatis-entry usr/share/man/man1/RNAlocmin.1.gz
W: vienna-rna: manpage-has-useless-whatis-entry usr/share/man/man1/ct2db.1.gz
W: python3-rna: package-has-unnecessary-activation-of-ldconfig-trigger
W: vienna-rna source: patch-file-present-but-not-mentioned-in-series add_shared_library
N: 0 tags overridden; 5 unused overrides

