Macros starting with `r' in osfmk/mach

• REQUESTED_TRAILER_SIZE osfmk/mach/message.h:455
• round_msg osfmk/mach/message.h:331
• round_page osfmk/mach/vm_param.h:130
• ROUNDUP2 osfmk/mach/rpc.h:274
• ROUNDWORD osfmk/mach/rpc.h:275
• RPC_BOUND osfmk/mach/rpc.h:270
• rpc_error osfmk/mach/rpc.h:297
• RPC_FIELD osfmk/mach/rpc.h:267
• RPC_MASK osfmk/mach/rpc.h:264