Fix syntax error
Rebuild Texinfo manual
Improve screenshot descriptions
Ignore faulty links in linkcheck
Update some references to account for redirects
Fix issue #401, clang faulty include folding

Fix error-filter for clang checker when processing a reported error
through an include chain
Merge pull request #402 from LefterisJP/master

Fix issue #401, clang faulty include folding
Fix conditional

Be on the safe side and check include-error as well
Fix typo
Merge pull request #403 from juergenhoetzel/master

Fix typo