Reduce dependency on gnulib by requiring C99 and POSIX 2008

- Remove gnulib modules c99, getopt-posix, strdup-posix, ssize_t
- Also remove obsolete gnulib module snippet/unused-parameter, use
  _GL_UNUSED instead of older _GL_UNUSED_PARAMETER, and instead of
  [[maybe_unused]].

Thanks to @dimztimz for providing the patch on which this commit is based.

1 files changed, 5 insertions, 6 deletions

diff --git a/providers/enchant_voikko.c b/providers/enchant_voikko.c
index 964cf82..69f2ffd 100644
--- a/providers/enchant_voikko.c
+++ b/providers/enchant_voikko.c
@@ -37,7 +37,6 @@
 #include <string.h>
 
 #include <libvoikko/voikko.h>
-#include "unused-parameter.h"
 
 #include "enchant-provider.h"
 
@@ -81,14 +80,14 @@ voikko_dict_suggest (EnchantDict * me, const char *const word,
 }
 
 static void
-voikko_provider_dispose_dict (EnchantProvider * me _GL_UNUSED_PARAMETER, EnchantDict * dict)
+voikko_provider_dispose_dict (EnchantProvider * me _GL_UNUSED, EnchantDict * dict)
 {
 	voikkoTerminate((struct VoikkoHandle *)dict->user_data);
 	free (dict);
 }
 
 static char **
-voikko_provider_list_dicts (EnchantProvider * me _GL_UNUSED_PARAMETER,
+voikko_provider_list_dicts (EnchantProvider * me _GL_UNUSED,
 			    size_t * out_n_dicts)
 {
 	size_t i;
@@ -112,7 +111,7 @@ voikko_provider_list_dicts (EnchantProvider * me _GL_UNUSED_PARAMETER,
 }
 
 static int
-voikko_provider_dictionary_exists (struct str_enchant_provider * me _GL_UNUSED_PARAMETER,
+voikko_provider_dictionary_exists (struct str_enchant_provider * me _GL_UNUSED,
 				   const char *const tag)
 {
 	size_t i;
@@ -160,13 +159,13 @@ voikko_provider_dispose (EnchantProvider * me)
 }
 
 static const char *
-voikko_provider_identify (EnchantProvider * me _GL_UNUSED_PARAMETER)
+voikko_provider_identify (EnchantProvider * me _GL_UNUSED)
 {
 	return "voikko";
 }
 
 static const char *
-voikko_provider_describe (EnchantProvider * me _GL_UNUSED_PARAMETER)
+voikko_provider_describe (EnchantProvider * me _GL_UNUSED)
 {
 	return "Voikko Provider";
 }