[oak perl] Finished: shift() to an array reference

[steve kolupaev]

Thanks for the advice, everbody.   As I thought,
the coder did not plan on his shifts eating into the array
on the caller's heap.

The level of Perl experience in this project isn't uniform.
But the big challenge is elsewhere.

Some guys on the project are a bit rusty with Perl,
and one with no perl objects at all.
About half were comfortable with perl references
from the start.   I've become the Perl guru, and am
helping others get up to speed.

Steve K.