Replace ACCESSPERMS by more compatible alternative

Sources:
* https://mail.gnome.org/archives/commits-list/2010-June/msg09709.html
* http://src.illumos.org/source/xref/freebsd-head/sys/sys/stat.h#298
* TritonDataCenter/pkgsrc-legacy#12

src/plugins/ftp/fs.cpp

@@ -110,7 +110,7 @@ std::string fs_canonical(const std::string& path)
 
 bool fs_create_directory(const std::string& path)
 {
-    return (mkdir(path.c_str(), ACCESSPERMS) == 0);
+    return (mkdir(path.c_str(), (S_IRWXU|S_IRWXG|S_IRWXO)) == 0);
 }
 
 bool fs_remove(const std::string& path)