misc. cleanup and removing some unnecessary exports
Use SVD for computing the condition number of matrices (#1862)
Return Inf for singular matrices.
cond(A,2) also returns NaN for all zeros input.

To fix:
cond(A,p) returns Inf for all zeros input except when p = 2.
Close #1861
Use norm(A, :fro) instead of norm(A, "fro")
documentation for cond and norm
Use LapackException. We do not have SingularException.
Close #1862
we do not have catch-by-type clauses
Add scale! functions and use in norm.
Merge branch 'master' of github.com:JuliaLang/julia
bugfix, test cases for FFTs of subarrays
Merge branch 'master' of git://github.com/JuliaLang/julia into new_fftw
update FFT docs
in brfft, d can be any integer, not just Int
define FFT functions for scalars (where they are just the identity)