2bc6f7d071
nfs_* to nfs4_* to avoid collisions with nfsclient's names. Even static names should have a unique prefix so that they can be debugged easily. Most of the renamed functions can probably be shared. nfs4_cmount() and nfs4_sync() are identical to the nfs_* versions, and all the others except nfs4_vfsops() seem to be idendentical except for style bugs, missing support for mountroot, and bugs. Fix some nearby style bugs. Remove duplicate $FreeBSD$.