tests: Use rtems_status_text()
tests/psxtests: Use <rtems/test.h>
tests/sptests: Use <rtems/test.h>
tmtests: convert to test.h
psxtmtests: Add test.h support
score: Fix heap protection

Partially revert commit 2a713e3b944625c45154f0ea7f5703e918de758.