core tests are using \copy with hard-coded relative paths

[strk]

This prevents running them from arbitrary directories. These are: core/concave_hull_hard.sql core/regress_big_polygon.sql core/regress_gist_index_nd.sql core/regress_spgist_index_2d.sql core/regress_spgist_index_3d.sql core/regress_spgist_index_nd.sql

[strk]

This blocks #4207

[strk]

One solution would be to have run_test.pl perform keyword substitution on the .sql files (psql variables do not work with \copy)

[Sandro Santilli <strk@…>]

In 47e75c4/git:

Load each regress test in its own directory

Closes #4777 by making it allowed to use hard-coded paths

Update topology tests so hard-coded paths are relative to the
script file rather than the supposed calling path, allowing
them to be run from any directory too

[Sandro Santilli <strk@…>]

In 3c7e31f/git:

Use relative paths in topology tests

References #4777 in 3.0 branch (3.0.7dev)

Should fix regression test broken by upgrading of
run_test.pl in commit a0c29068d

[Sandro Santilli <strk@…>]

In 4a78ce4/git:

Use relative paths in topology tests

References #4777 in 2.5 branch (2.5.8dev)

Should fix regression test broken by upgrading of
run_test.pl in commit 35b17931f