[Description]
Moves files listed in parameters to Freedesktop Trashdir with properly formatted metadata.
Time offset allows you to offset time into future '+' or past '-' in the
deletion timestamp from current time. Time offset supports suffixes y, m, d, H,
M and S for years, months, days, hours, minutes and seconds.

[Conforming to]
http://freedesktop.org/wiki/Specifications/trash-spec