AFAICT Linux alone uses the "mount.XXX" convention for mount helpers. Illumos, Irix, HPUX, OSX, and the BSDs all use "mount_XXX". Fixes issue #3841
AFAICT Linux alone uses the "mount.XXX" convention for mount helpers. Illumos, Irix, HPUX, OSX, and the BSDs all use "mount_XXX". Fixes issue #3841