tests: fix usage of require_ulimit_

* init.cfg (require_ulimit_v_): Renamed from require_ulimit_
as this only checks for ulimit -v support.  Other uses of
ulimit -t and ulimit -n in tests shouldn't cause false failures
if not supported.
* cfg.mk (sc_prohibit_test_ulimit_without_require_): A new syntax check
to ensure that require_ulimit_v_() is used iff required.
* tests/misc/head-c.sh: Add missing call to require_ulimit_v_.
* tests/rm/many-dir-entries-vs-OOM.sh: Likewise.
* tests/split/r-chunk.sh: Remove non mandatory require_ulimit_ call.
* tests/misc/sort-merge-fdlimit.sh: Likewise.
* tests/cp/link-heap.sh: Adjust to renamed require_ulimit_v_.
* tests/dd/no-allocate.sh: Likewise.
* tests/misc/csplit-heap.sh: Likewise.
* tests/misc/cut-huge-to-eol-range.sh: Likewise.
* tests/misc/printf-surprise.sh: Likewise.

1 files changed, 1 insertions, 1 deletions

diff --git a/init.cfg b/init.cfg
index 33122cc69..c48607c93 100644
--- a/init.cfg
+++ b/init.cfg
@@ -112,7 +112,7 @@ require_openat_support_()
   fi
 }
 
-require_ulimit_()
+require_ulimit_v_()
 {
   local ulimit_works=yes
   # Expect to be able to exec a program in 10MiB of virtual memory,