Include limits.h to correctly pick up NAME_MAX on macOS.

Author: aardvark179

src/main/java/org/truffleruby/platform/DarwinAMD64NativeConfiguration.java

@@ -369,6 +369,7 @@ public static void load(NativeConfiguration configuration, RubyContext context)
         configuration.config("platform.file.DT_SOCK", 12);
         configuration.config("platform.file.DT_UNKNOWN", 0);
         configuration.config("platform.file.AT_SYMLINK_NOFOLLOW", 32);
+        configuration.config("platform.file.NAME_MAX", 255);
         configuration.config("platform.io.SEEK_SET", 0);
         configuration.config("platform.io.SEEK_CUR", 1);
         configuration.config("platform.io.SEEK_END", 2);

tool/generate-native-config.rb

@@ -590,6 +590,7 @@ def constants(name)
   cg.include 'fnmatch.h'
   cg.include 'sys/stat.h'
   cg.include 'dirent.h'
+  cg.include 'limits.h'
   cg.consts %w[
     FNM_CASEFOLD FNM_DOTMATCH FNM_EXTGLOB FNM_NOESCAPE FNM_PATHNAME FNM_SYSCASE