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testing copying script partial beta

A fair chunk is working.

* the iteration through minor DF versions is commented out for testing,
and assumes both packs are for 40_03

* getting folder names for the old pack has two problems; 1) `for` only
takes ints and the zero-padding is not replaced, and 2) robocopy throws
a cyclic copy error because relative path is not evaluated properly
removed symlinks script

it was causing more trouble than it was worth, including errors in other
scripts and programs.  No more (automatic) symlinks!
get future-pack info in function

much more readable, add echo to show version of future pack
misc work on copying script

now using real relative paths, not absolute paths using %cd%; echo past
and new pack versions when found; re-enable iteration through minor DF
versions, better handling of zero-padding; set *then* check some
variables
fix tabs, comments on own lines
fix commenting

turns out that :: for comments causes errors (parsed as drive letter)
when in loops, so all comments are back to using rem
use delayed expansion in loops
merge development branch

copying script now working, dealing with merge conflicts