We avoid computing axes for tuples -- which is a valuable optimization -- but when we explicitly construct a tuple broadcast with axes pre-set (for, e.g., broadcasted assignment), we need to check that those axes are compatible with the ones inside the broadcasted expression before accepting them.

(cherry picked from commit b5c4e63)

* Fix behavior of Sys.which when passed an empty String argument

* Added test to check for fixed Sys.which behavior with empty string input

* Added test to check that Sys.which returns nothing when passed a blank
string

* Ensure that Sys.which returns a regular file and never a directory

* Moved new Sys.which tests into test/spawn.jl alongside the existing ones

* Remove new which tests from test/sysinfo.jl (they've moved to
test/spawn.jl)

(cherry picked from commit fa235cc)

…33228)

This has the following advantages:

* It allows our buildbots to pass in which code signing identity they
want to use (rather than having the identity hash hardcoded in our build
system)

* It stops blindly attempting to codesign on random user's machines

* It causes codesign failure to stop the build

(cherry picked from commit 0760842)

* bug fixes in matrix log

* patches to matrix log (#33245)

* patches to matrix log

Avoid integer overflow if `s > 63`.
Correct logic for `s == 0`.
Only use fancy divided difference formulae if eigenvalues are close - avoids dangerous roundoff error if they are in opposite sectors.

* add tests

(cherry picked from commit 318affa)

…2 SSL.

(cherry picked from commit 6797cb3)

This was a hold-over from the old iteration protocol, which needed to maintain state between `done` and `next`.
The `iteration` function of `Dict` has since been re-written to be safe for concurrent deletions.

Replaces: #33756
Co-Authored-By: Hans-Peter Suter <hps@treetron.ch>
(cherry picked from commit 1731d0a)

fix #31666

(cherry picked from commit 3a60e87)

…0918)

fixes #21982

(cherry picked from commit 5533f22)

(cherry picked from commit efd794e)

* Fix colon-reshaping of OffsetVector
* reshape(::AbstractVector, ::Colon) is a no-op

(cherry picked from commit f80c3ee)

…33926)

(cherry picked from commit cbdb321)

* Remove SuiteSparse driver mention in the license, since it is the same as the rest of Julia.

Co-authored-by: Viral B. Shah <viral@juliacomputing.com>
(cherry picked from commit 1878343)

(cherry picked from commit 717d548)

(cherry picked from commit 598209d)

Upstream has apparently modified this file as of March 30th 2020, which
is annoying as it has broken all older builds of Julia attempting to
download and check this file.

(cherry picked from commit c980519)