HPCC-12064 New preload option in a package copies all files

If you set preload="1" in a package file then all files referenced in the
package will be resolved when the package is loaded - this will cause files to
be loaded and locked even if they are not referenced by any query.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
HPCC-12064 New preload option in a package copies all files

In addition to resolving the files (and thus locking them) we also want to
cause them to be copied.

Signed-off-by: Richard Chapman <rchapman@hpccsystems.com>
Merge pull request #6627 from richardkchapman/roxie-package-pull

HPCC-12064 New preload option in a package copies all files

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>