Add tools::on_startup, and warn about glibc 2.25 bug if found

https://sourceware.org/bugzilla/show_bug.cgi?id=21778

src/daemon/main.cpp

@@ -61,7 +61,7 @@ int main(int argc, char const * argv[])
 
     // TODO parse the debug options like set log level right here at start
 
-    tools::sanitize_locale();
+    tools::on_startup();
 
     epee::string_tools::set_module_name_and_folder(argv[0]);