(2x3)\(2x2) crashes inside LAPACK

[JeffBezanson]

Looks like something is causing dgels to write outside an array:

julia> A=rand(2,3);b=rand(2,2)
0.15240817408192342 0.68197511458982851 
0.28618656967918277 0.85123727301755281 

julia> A\b
==31381== Invalid write of size 8
==31381==    at 0x12114FF0: dgels_ (in /home/jeff/src/julia-master/julia/external/root/lib/libLAPACK.so)
==31381==    by 0x76F10C3: ???

[ViralBShah]

Fixed in commit d5abe85

julia> rand(2,3) \ rand(2,2)
0.65713735504665283 0.01469730971033037
0.44896694069597876 0.39050349636098097
0.27183963895270702 0.16800828330112461

julia> a = rand(2,3); b = rand(2,2);

julia> x = a \ b
15.64808214355044313 2.24266591089133138
-27.86728714367731641 -3.97176232211137004
-0.50339127090780345 -0.06232994717219131

julia> norm (a*x-b)
8.32373713042688455e-15