raster/test/regress/loader/Tiled10x10Copy race condition

[strk]

It looks like the raster/test/regress/loader/Tiled10x10Copy test suffers from a race condition as its "-pre.pl" script creates a file in the source tree which is then removed by the "-post.pl" script. This means that two parallel builds using the same source tree will possibly see the file unlinked by the other before it's used.

[strk]

You can see the effects of the race condition here: ​https://dronie.osgeo.org/postgis/postgis/2569/1/3

[Sandro Santilli <strk@…>]

In 05948601/git:

Replace pre/post machinery of rasters with .tif.ref files

References #5068

[Sandro Santilli <strk@…>]

In 1090436f/git:

Replace pre/post machinery of rasters with .tif.ref files

Closes #5068

[Sandro Santilli <strk@…>]

In 1090436f/git:

Replace pre/post machinery of rasters with .tif.ref files

Closes #5068

[Sandro Santilli <strk@…>]

In d5a9b1b/git:

Another pre/post machinery replaced with .tif.ref files

References #5068

[Sandro Santilli <strk@…>]

In 21bb44fc/git:

Replace pre/post machinery of rasters with .tif.ref files

References #5068 in stable-3.0 branch (3.0.7dev)

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