Defines starting with `a' in nfs

• AUTH_BADCRED nfs/rpcv2.h:80
• AUTH_BADVERF nfs/rpcv2.h:82
• AUTH_REJECTCRED nfs/rpcv2.h:81
• AUTH_REJECTVERF nfs/rpcv2.h:83
• AUTH_TOOWEAK nfs/rpcv2.h:84