Log Message:
moreutils: Update to 0.63

pkgsrc changes:
 - Switch MASTER_SITES to upstream snapshots instead of using Debian mirrors

Changes:
0.63
----
 - vipe: Clean up temp file even when it exits with an error.
       Thanks, Stig Palmquist.
 - ts: Fix ts -m %.s to not output negative microseconds.
       Thanks, Dima Kogan
 - sponge: Fix bug in -a mode that doubled original content of file when the
           temp file is located on a different filesystem.