Defines starting with `m' in kernserv

• MACRO_END kernserv/macro_help.h:58
• MACRO_RETURN kernserv/macro_help.h:62
• MINSIZE kernserv/kalloc.h:39
• MNTOPT_FS kernserv/loadable_fs.h:147
• MNTOPT_REMOVABLE kernserv/loadable_fs.h:148