fixing two typos; incomplete error message; exit status

[Benno Schulenberg]

Hello Kevin,

Looking through the documentation of 0.60.8 for some info about
the exit status of aspell, I came across a typo ("termianted")
in the README file.  Then I spell-checked the whole thing and
found another ("implemenation").  Attached patch fixes those.

Then something I've wanted to report since a long time: most
tools allow one to bundle the short options, but aspell doesn't.
When one tries to run 'aspell -xc somefile' it not only fails,
it also says:

  Error:  does not take any parameters.

Something appears to be missing ("-x"?) from the message.

So, it would be good if the manual said that short options
may not be concatenated.

And it would be nice if the manual said something about the
exit status of aspell.  That it is zero when no error occurred.
Whether spelling corrections were made or not cannot be seen
in the exit status.

(On http://aspell.net/ there's a typo too: s/slower/slowly/.)

Benno

0001-docs-fix-two-typos.patch
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