[PATCH] configure: disallow whitespace in paths, extend checks to $PWD

[David Bremner]

Tomi Ollila <tomi.ollila at iki.fi> writes:

> Whitespace in $NOTMUCH_SRCDIR (and $PWD) may work in builds,
> but definitely will not work in tests. It would be difficult
> to make tests support whitespace in test filename paths -- and
> fragile to maintain if done.
>
> So it is just easier and safer to disallow whitespace there.
>
> In case of out of tree build $NOTMUCH_SRCDIR differs from $PWD
> (current directory). Extend this whitespace, and also previously
> made unsafe characters check to $PWD too.

pushed,

d