build: update gnulib for syntax-check improvement

Commit 5b3e538 proved useful enough to migrate to gnulib after
enhancing it to be more generic, which in turn pointed out that
commit a2c811db missed an offender.

* gnulib: Update to latest.
* cfg.mk (sc_prohibit_reversed_compare_failure): Delete, now that
gnulib provides it.
* tests/ls/dangle: Fix last offender.

1 files changed, 0 insertions, 6 deletions

diff --git a/cfg.mk b/cfg.mk
index 3c42d5d92..0626f4802 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -280,12 +280,6 @@ sc_prohibit_framework_failure:
 	halt='use framework_failure_ instead'				\
 	  $(_sc_search_regexp)
 
-# In tests, use "compare expected actual", not the reverse.
-sc_prohibit_reversed_compare_failure:
-	@prohibit='\<compare [^ ]+ (exp|/dev/null)'			\
-	halt='reversed compare arguments'				\
-	  $(_sc_search_regexp)
-
 ###########################################################
 _p0 = \([^"'/]\|"\([^\"]\|[\].\)*"\|'\([^\']\|[\].\)*'
 _pre = $(_p0)\|[/][^"'/*]\|[/]"\([^\"]\|[\].\)*"\|[/]'\([^\']\|[\].\)*'\)*