Set MKL_INTERFACE_LAYER to ILP64 if USE_BLAS64=1 (#3928, #5146)
Patch ARPACK for fortran calling convention to be consistent with MKL.
This patch was obtained from macports: http://trac.macports.org/ticket/35508
Merge pull request #5309 from lindahua/dh/mean2

slightly improved implementation of mean
Set MKL_INTERFACE_LAYER to ILP64 if USE_BLAS64=1 (#3928, #5146)
Merge branch 'vs/arpack-mkl' of github.com:JuliaLang/julia into vs/arpack-mkl
Add -ff2c when using MKL and Accelerate
Merge branch 'vs/arpack-mkl' of github.com:JuliaLang/julia into vs/arpack-mkl
Do not apply the ARPACK patch
Add -fno-second-underscore along with -ff2c.
Merge branch 'vs/arpack-mkl' of github.com:JuliaLang/julia into vs/arpack-mkl

Conflicts:
	Make.inc