Add patch for compiling GMP 6.0.0 on OSX
Remove gmp-5.1.3 checksums
fix issue #8155 where keywords arguments were not getting displayed properly
Avoid warning for possibly non-existing file

Also remove tab to avoid emacs warning about makefile syntax

Squashed the 4 commits from #8192

closes #8192
Merge branch 'make-warning'
Update pcre to 8.35
Bump FFTW to 3.3.4
Merge pull request #7957 from JuliaLang/sf/gmp6osx

[WIP] Update gmp to 6.0.0
fix #8213, map with >2 tuple arguments
base/test.jl: cosmetic tweak to test_throws warning message.
Merge pull request #8190 from JuliaLang/jcb/fixfkeyshow

keyword function args were not getting displayed properly
Enable github two-factor authentication; fixes #5252
Updates to two-factor authentication.
All the julia patches are in FFTW 3.3.4.
Comment out hanging dates tests and move dates even further up in testing
Merge pull request #8202 from JuliaLang/vs/pcre

Update pcre to 8.35
Merge branch 'master' of https://github.com/JuliaLang/julia
Merge pull request #8204 from JuliaLang/vs/fftw

Bump FFTW to 3.3.4
Merge pull request #6668 from JuliaLang/kms/two-factor-auth

RFC: Enable github two-factor authentication; fixes #5252