Log Message:
pkgtools/mktool: update to 0.1.14

 - fetch: Check file first, unlink if bad.
 - distinfo: Refactor to use Distfile::Entry.
 - fetch: Only check file size if file exists.
 - checksum: Fix patch mode.
 - checksum: Improve compatibility with checksum.awk.
 - checksum: Fix strip suffix mode.