sysutils/linux-crashplan: make sure poll selector is set from rc

- CrashPlan in place update can overwrite our run.conf preventing it
  from working [1]
- Update to 3.6.4

PR:		194465 [1]


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@371372 35697150-7ecd-e111-bb59-0022644237b5