Add Julia functions based on CSparse C code
Move functions based on CSparse to base/jlsparse.jl
More efficient sizeof() for complex types

Remarkably, this was originally the main bottleneck in the
cache-friendly transpose algorithm for small complex matrices.
Cache-friendly transpose algorithm
Improve and simplify blocksize calculation in transpose

This also yields better scaling.
Merge pull request #3219 from timholy/transposecf

Cache-friendly transpose
fix #3234, empty function with keyword arguments
copy/peek for IOBuffer and some module introspection. Close #3229
Reexport bsxfun from Base for #3218
temporary workaround for #3232
not a real fix, but hides the problem, which is better than
nothing for now.
unsupport the mingw32 compiler. closes #3241
provide download link for 32-bit MinGW-w64
fix #3240, delay some pointerref and pointerset errors
Merge branch 'master' of github.com:JuliaLang/julia
Merge pull request #3236 from JuliaLang/db/jlsparse

Db/jlsparse
Merge remote-tracking branch 'upstream/master'