More conditional dependencies. * modules/faccessat (Depends-on): Add conditions. * modules/fchmodat (Depends-on): Likewise. * modules/fchownat (Depends-on): Likewise. * modules/fstatat (Depends-on): Likewise. * modules/mkfifoat (Depends-on): Likewise. * modules/readlinkat (Depends-on): Likewise. * modules/symlinkat (Depends-on): Likewise. * modules/unlinkat (Depends-on): Likewise. * modules/utimensat (Depends-on): Likewise. * modules/mkdirat (Depends-on): Add sys_stat. Add conditions. * modules/linkat (Depends-on): Refine the conditions. * modules/renameat (Depends-on): Likewise.