tests: fold: consolidate all fold tests in tests/fold

* tests/misc/fold.pl: Move from here to ...
* tests/fold/fold.pl: ... here.
* tests/local.mk: Adjust accordingly.

tests/fold/fold-characters.sh

@@ -60,7 +60,7 @@ compare character-exp2 character-out2 || fail=1
 
 # Ensure bounded memory operation
 vm=$(get_min_ulimit_v_ fold /dev/null) && {
-  yes | tr -d '\n' | (ulimit -v $(($vm+8000)) && fold 2>err) | head -n10 || fail=1
+  yes | tr -d '\n' | (ulimit -v $(($vm+8000)) && fold 2>err) | head || fail=1
   compare /dev/null err || fail=1
 }
 

tests/local.mk

@@ -329,7 +329,7 @@ all_tests =					\
   tests/fold/fold-characters.sh			\
   tests/fold/fold-nbsp.sh			\
   tests/fold/fold-spaces.sh			\
-  tests/misc/fold.pl				\
+  tests/fold/fold.pl				\
   tests/groups/groups-dash.sh			\
   tests/groups/groups-process-all.sh		\
   tests/groups/groups-version.sh		\