There is now Configure support for creating a relocatable perl tree. If you Configure with
"-Duserelocatableinc", then the paths in @INC (and everything else in %Config) can be optionally located
via the path of the perl executable.
That means that, if the string ".../" is found at the start of any path, it’s substituted with the
directory of $^X. So, the relocation can be configured on a per-directory basis, although the default
with "-Duserelocatableinc" is that everything is relocated. The initial install is done to the original