Bugfix: open_file_cache did not update file info on retest. If file inode was not changed, cached file information was not updated on retest. As a result stale information might be cached forever if file attributes was changed and/or file was extended. This fix also makes obsolete r4077 change of is_directio flag handling, since this flag is updated together with other file information.

# Copyright (C) Igor Sysoev


have=NGX_SUPPRESS_WARN . auto/have

have=NGX_SMP . auto/have