Macros starting with `f' in bsd/nfs

• fxdr_hyper bsd/nfs/xdr_subs.h:107
• fxdr_nfsv2time bsd/nfs/xdr_subs.h:83
• fxdr_nfsv3time bsd/nfs/xdr_subs.h:98
• fxdr_unsigned bsd/nfs/xdr_subs.h:80