This commit adds a parameter to the `File#extract` and `Entry#extract` methods
so that a base destination directory can be specified for extracting archives
in bulk to somewhere in the filesystem that isn't the current working
directory. This directory is `.` by default. It is combined with the entry
path - which shouldn't but could have relative directories (e.g. `..`) in it -
and tested for safety before extracting.
Resolves#540.
There has been an option in `Zip::File` (`:restore_times`) for a long
time, but it seems it has never worked. Firstly the actual timestamp of
an added file wasn't being saved, and secondly an extracted file wasn't
having its timestamp set correctly.
This commit fixes both of those issues, and adds tests to make sure.
Robert Haines
Jan-Joost Spanjers