'include' should skip emacs recovery files

[ewxrjk]

$ really strace -etrace=open rsbackup --dry-run --backup
open("/etc/ld.so.cache", O_RDONLY)      = 3
open("/lib/x86_64-linux-gnu/librt.so.1", O_RDONLY) = 3
open("/usr/lib/x86_64-linux-gnu/libstdc++.so.6", O_RDONLY) = 3
open("/lib/x86_64-linux-gnu/libm.so.6", O_RDONLY) = 3
open("/lib/x86_64-linux-gnu/libgcc_s.so.1", O_RDONLY) = 3
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY) = 3
open("/lib/x86_64-linux-gnu/libpthread.so.0", O_RDONLY) = 3
open("/usr/lib/locale/locale-archive", O_RDONLY) = 3
open("/etc/rsbackup/config", O_RDONLY)  = 3
open("/etc/rsbackup/local", O_RDONLY)   = 4
open("/etc/rsbackup/hosts.d", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
open("/etc/rsbackup/hosts.d/#lyonesse#", O_RDONLY) = 4
open("/etc/rsbackup/hosts.d/araminta", O_RDONLY) = 4
open("/etc/rsbackup/hosts.d/ascolais", O_RDONLY) = 4
open("/etc/rsbackup/hosts.d/deodand", O_RDONLY) = 4
open("/etc/rsbackup/hosts.d/heceptor", O_RDONLY) = 4
open("/etc/rsbackup/hosts.d/iset", O_RDONLY) = 4
open("/etc/rsbackup/hosts.d/kakajou", O_RDONLY) = 4
open("/etc/rsbackup/hosts.d/lyonesse", O_RDONLY) = 4
ERROR: /etc/rsbackup/hosts.d/lyonesse:1: duplicate host

Files with a "#" at the start of the name should be skipped.