[PATCH] configure: only install bash completion if supported

[Jani Nikula]

On Sun, 02 Feb 2014, David Bremner <david at tethera.net> wrote:
> Mark Walters <markwalters1009 at gmail.com> writes:
>
>> This LGTM (untested)
>
> I did test it, at least completely removing bash completion works as
> expected.  
>
> Unfortunately --with-bash-completion does not override this test because
> the order things are processed. Do you think this is a bug?  I wondered
> if users that "know what they are doing" (TM) might want to force
> installation even though the pkg-config test fails.

I thought it was a feature, not a bug, but I'm fine either way.

BR,
Jani.