[Octave-bug-tracker] [bug #59706] Avoid "canonicalize_file_name" on Windows

[Rik]

Follow-up Comment #41, bug #59706 (project octave):

>From comment #40

> * Check if we really need to call `load_path::add` so often (100s of times
if I read the data in the Very Sleepy profile correctly).
> 
> * Check if it is possible to use something else than the canonical path as
the unique identifier when managing the load-path.

I agree with this ordering for priority.  First, reduce the number of function
calls, and if that is still not enough then do the second part and come up
with a different identifier.  As mentioned earlier the device_id + inode_id is
unique and could be an easy substitute.

The coding work for item #1 doesn't need to be done on Windows.  We could put
in a static variable COUNT in load_path::add and see how many times it gets
incremented for a given script (one that changes directories or executes a few
simple actions).  This number becomes the baseline and then we can try
modifications to the code to see whether this number is reduced or not.

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