Add specialized methods for complex-real BLAS multiplication. Cleanup of matmul.jl. This includes some !s in the mutation versions.
fix a small bug in issubtype
Merge branch 'master' of github.com:JuliaLang/julia
improve inference and inlining involving type tuples
fix small mistake in tupleref tfunc
Merge pull request #6235 from JuliaLang/anj/complexreal

Add specialized methods for complex-real BLAS multiplication.