ocess with non-primary
  thread currently active (general BZ 233852).
  - Enable back again the testcases named `attachstop.exp' (no such exist now).
  - Rename the testcase `gdb.threads/attachstop' to `gdb.threads/attachstop-mt'.
- Test ia64 memory leaks of the code using libunwind.
- Testcase delay increase (for BZ 247354).
- Test gcore memory and time requirements for large inferiors.