* Make hasmntval() return an 0 on error, 1 on success and

* Make hasmntval() return an 0 on error, 1 on success and
  place the value in an argument. Update all users and
  check properly for errors. Get rid of hasmntvalerr().
* Add hasmntvaldelim() which takes a string delimiter. This
  is now used to chop vers=4.1 to 4, so that we can parse the
  version correctly (we don't care about the .1 part yet)