Do not allow direct download of .inc files (unparsed PHP source). Fixes #8005
(cherry picked from commit b1fccd42547201f4dbfe941bcc59c8eac3456364)
Do not allow direct download of .inc files (unparsed PHP source). Fixes #8005
(cherry picked from commit b1fccd42547201f4dbfe941bcc59c8eac3456364)