Implement global-to-global dash::copy based on #659

[bertwesarg]

[codecov[bot]]

Codecov Report

Merging #660 into development will increase coverage by 0.39%. The diff coverage is 65.74%.

@@               Coverage Diff               @@
##           development     #660      +/-   ##
===============================================
+ Coverage        83.65%   84.04%   +0.39%     
===============================================
  Files              336      336              
  Lines            24968    25063      +95     
  Branches         11354    11416      +62     
===============================================
+ Hits             20887    21065     +178     
- Misses            3692     3694       +2     
+ Partials           389      304      -85     

Impacted Files	Coverage Δ
dash/include/dash/algorithm/Copy.h	59.78% <45.45%> (-5.60%)	:arrow_down:
dash/test/algorithm/CopyTest.cc	97.62% <97.36%> (-0.02%)	:arrow_down:
dash/test/container/MatrixTest.cc	99.33% <100.00%> (+<0.01%)	:arrow_up:
dash/include/dash/GlobRef.h	76.99% <0.00%> (-13.28%)	:arrow_down:
dash/include/dash/Distribution.h	84.84% <0.00%> (-3.04%)	:arrow_down:
dash/include/dash/util/UnitLocality.h	56.52% <0.00%> (-1.45%)	:arrow_down:
dash/include/dash/memory/GlobHeapMem.h	96.47% <0.00%> (-0.71%)	:arrow_down:
dash/include/dash/pattern/BlockPattern.h	96.31% <0.00%> (-0.57%)	:arrow_down:
dash/include/dash/Cartesian.h	89.16% <0.00%> (+0.83%)	:arrow_up:
dash/include/dash/Array.h	88.94% <0.00%> (+0.96%)	:arrow_up:
... and 22 more

[bertwesarg]

This is green now (though I'm note sure what this MatrixTest tried to achieved). Any more comments? Thanks.