Move memleaks logfile(s) to .../Nightly dir.

### TODO:

Move the existing files to `/data/sea/chapel/Nightly`:

* [ ] `cp -r /data/sea/chapel/NightlyMemLeaks/FULL.memleaks /data/sea/chapel/Nightly/`
* [ ] `cp /data/sea/chapel/NightlyMemLeaks/day*memleaks* /data/sea/chapel/Nightly`

Verify the files were copied successfully, then delete the files from the old location:

* [ ] `rm -rf /data/sea/chapel/NightlyMemLeaks/FULL.memleaks`
* [ ] `rm -rf /data/sea/chapel/NightlyMemLeaks/day*memleaks*`