Repeatability of test-case SETTE tests

Context

When using the default build locations for SETTE tests (variable CUSTOM_DIR undefined), the SETTE testing of the test cases in the main branch is not repeatable without intervention, even if the "clean" option (-c) has been selected.

Analysis

The default build path for test cases is set to the value of variable CONFIG_DIR0, i.e. to the cfgs subdirectory, which differs from the path used by makenemo to create the actual test subdirectories when testing test cases. As a consequence, identically named test subdirectories are created inside both the cfgs and tests subdirectories, which causes makenemo to exit prematurely with an error message in subsequent attempts to SETTE test the corresponding test case.

Fix

Unless a buld location is explicitly specified via variable CUSTOM_DIR, it is recommended to suppress the -t option in the makenemo calls throughout all SETTE scripts.