Update base/linalg_lapack.jl

[andreasnoack]

Fixes a BoundsError() when solving a system AX=B where B has more than one column but less columns than A.

[pao]

#1281 is eliminating this file and moving the code to a new file. /cc @dmbates so we don't lose track of this.

[dmbates]

That particular problem is fixed with commit 9f18c27 but I still managed to get other things wrong.

julia> A = hcat(ones(Int, (20,1)), randn(20,3))
20x4 Float64 Array:
 1.0   0.619081    0.404256   -2.67521   
 1.0   1.53191    -0.0808217   1.59935   
 1.0   0.943053    0.399352    0.999465  
 1.0   0.856869   -1.11556    -0.650456  
 1.0  -2.02785    -1.38463    -1.30898   
 1.0  -1.88343     0.392249    0.00216758
 1.0   0.410346   -0.380736   -0.399839  
 1.0  -0.321703    0.806686    0.0868557 
 1.0  -0.231512    2.57094    -0.513419  
 1.0  -0.0277049   1.11686    -0.951766  
 1.0  -0.362643   -0.584142   -0.139476  
 1.0  -0.293289    0.900996   -0.723704  
 1.0   0.368721    1.24072     0.257587  
 1.0  -0.385336   -0.650678    0.138635  
 1.0   1.1719      3.78649     1.89639   
 1.0   0.0513328  -0.719821    0.399134  
 1.0  -0.574667   -1.07253    -1.60588   
 1.0  -0.0457362  -0.816301    0.520239  
 1.0  -0.356147   -1.87127    -0.30319   
 1.0  -0.396575   -0.213875    1.24382   

julia> B = rand(20,2)
20x2 Float64 Array:
 0.846606    0.98715  
 0.418574    0.538726 
 0.0658084   0.412714 
 0.750744    0.0361259
 0.959699    0.565081 
 0.378211    0.403123 
 0.00342535  0.854973 
 0.581534    0.738919 
 0.326259    0.13519  
 0.154789    0.834684 
 0.377152    0.797917 
 0.0299049   0.217196 
 0.0347649   0.822839 
 0.162089    0.95891  
 0.163272    0.294578 
 0.870526    0.721911 
 0.996131    0.297861 
 0.656316    0.682511 
 0.730336    0.200838 
 0.122441    0.496537 

julia> A\B
4-element Float64 Array:
  0.434433  
 -0.00116398
 -0.106834  
 -0.1082    

Another commit coming up.

[ViralBShah]

Need to merge this in the latest master, with the refactored linalg code.

[andreasnoack]

Lets close this one down as the problem has been solved in the new commit.

@dmbates There was a missing colon in gels!. I have made a pull request that adds it.
#1293