I think I got all the offending 'use lib' statements in both trunk and the reconfigure/ branch. Haven't heard any more from other users, so I'm closing ticket.
- [perl #45019] [PATCH] Correct @INC errors in some t/co... via RT
- [perl #45019] [PATCH] Correct @INC errors in some... James Keenan via RT
- [perl #45019] [PATCH] Correct @INC errors in some... James Keenan via RT
- [perl #45019] [PATCH] Correct @INC errors in some... James Keenan via RT
- Re: [perl #45019] [PATCH] Correct @INC errors in ... Andy Dougherty