gcovr fails to find readline.h at its original place
HTML report generation fails with:
FileNotFoundError: [Errno 2] No such file or directory: 'bin/dig/readline.h'
FileNotFoundError: [Errno 2] No such file or directory: 'bin/nsupdate/readline.h'
Likely caused by !3942 (merged).
Edited by Michal Nowak