PROJ/test/unit/test_fork.c, branch backport-3082-to-9.0

PROJ/test/unit/test_fork.c, branch backport-3082-to-9.0 Forked from https://github.com/OSGeo/PROJ Fix database access across fork() when SQLite3 doesn't use pread[64]() (fixes #2843) 2021-09-07T13:36:11+00:00 Even Rouault even.rouault@spatialys.com 2021-09-07T12:47:50+00:00 ce080251225d16e11e139a5ebe07cf608fe022b2