lsh 2.1 (new formula)

New formula for lsh.
Well, now I feel stupid :smile_cat:. I had it set up as ``` depends_on :x11 => :optional ``` and the build options as ``` args << "with-x" if build.with? "x11" ``` and with that in place it was still insisting on ``` x11 ```. It didn't actually occur to me to try ``` --without-x11 ``` explicitly, as common sense kind of implied to me that if the configure script listed the choice as optional and you didn't invoke it it wouldn't go hunting for it :confounded:.