OpenBSD 7.6 test failures

[rmottola]

This is on Intel i386 32bit with fix mentioned in #210

97% tests passed, 6 tests failed out of 190

Total Test time (real) = 60.81 sec

The following tests did not run:
171 - FastPathAlloc (Skipped)
172 - FastPathAlloc_optimised (Skipped)

The following tests FAILED:
22 - BlockImpTest_optimised (SEGFAULT)
24 - BlockImpTest_legacy_optimised (SEGFAULT)
143 - hash_test (Subprocess aborted)
144 - hash_test_optimised (Subprocess aborted)
145 - hash_test_legacy (Subprocess aborted)
146 - hash_test_legacy_optimised (Subprocess aborted)

[rmottola]

BlockImplTest fails with no output:

24/190 Testing: BlockImpTest_legacy_optimised
24/190 Test: BlockImpTest_legacy_optimised
Command: "/home/multix/code/gnustep-cvs/libobjc2/Build/Test/BlockImpTest_legacy_optimised"
Directory: /home/multix/code/gnustep-cvs/libobjc2/Build/Test
"BlockImpTest_legacy_optimised" start time: Nov 13 11:40 CET
Output:
----------------------------------------------------------
<end of output>
Test time =   0.04 sec
----------------------------------------------------------
Test Failed.
"BlockImpTest_legacy_optimised" end time: Nov 13 11:40 CET
"BlockImpTest_legacy_optimised" time elapsed: 00:00:00
----------------------------------------------------------

Hashtests all fail with assertion. E.g.:

143/190 Testing: hash_test
143/190 Test: hash_test
Command: "/home/multix/code/gnustep-cvs/libobjc2/Build/Test/hash_test"
Directory: /home/multix/code/gnustep-cvs/libobjc2/Build/Test
"hash_test" start time: Nov 13 11:41 CET
Output:
----------------------------------------------------------
Seed: 0
assertion "table->table_used == 0" failed: file "/home/multix/code/gnustep-cvs/libobjc2/Test/hash_test.c", line 95, function "main"
<end of output>
Test time =   1.10 sec
-