silence some warnings about unused params

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/misc/glob/glob-susv3.c

@@ -183,7 +183,8 @@ int __glob_match_in_dir(const char *d, const char *p, int flags, int (*errfunc)(
 # ifndef BUILD_GLOB64
 static
 # endif
-int __glob_ignore_err(const char *path, int err)
+int __glob_ignore_err(const char * path attribute_unused,
+			int err attribute_unused)
 {
 	return 0;
 }

libc/misc/internals/__uClibc_main.c

@@ -257,10 +257,11 @@ libc_hidden_def(__uClibc_fini)
  */
 void __uClibc_main(int (*main)(int, char **, char **), int argc,
 		    char **argv, void (*app_init)(void), void (*app_fini)(void),
-		    void (*rtld_fini)(void), void *stack_end) attribute_noreturn;
+		    void (*rtld_fini)(void),
+		    void *stack_end attribute_unused) attribute_noreturn;
 void __uClibc_main(int (*main)(int, char **, char **), int argc,
 		    char **argv, void (*app_init)(void), void (*app_fini)(void),
-		    void (*rtld_fini)(void), void *stack_end)
+		    void (*rtld_fini)(void), void *stack_end attribute_unused)
 {
 #ifndef __ARCH_HAS_NO_LDSO__
     unsigned long *aux_dat;

libc/misc/regex/regex_old.c

@@ -8140,7 +8140,7 @@ libc_hidden_def(regexec)
 size_t
 regerror (
     int errcode,
-    const regex_t *preg,
+    const regex_t * preg attribute_unused,
     char *errbuf,
     size_t errbuf_size)
 {

libc/pwd_grp/lckpwdf.c

@@ -146,7 +146,7 @@ ulckpwdf (void)
 
 
 static void
-noop_handler (int sig)
-{
+noop_handler (int sig attribute_unused)
+
   /* We simply return which makes the `fcntl' call return with an error.  */
 }