Merge pull request ruslo#1693 from t0p4/pr.qhull

Update 'qhull' to 7.2.0-p1

Add 'aws-c-common' package (ruslo#1694)

Update 'doctest' to v2.2.0 (ruslo#1699)

Merge pull request ruslo#1701 from bkotzz/brad_force_hard_link

Force hard link when unpacking dir

Add 'EntityX' package (ruslo#1697)

ICU 55.1-p4

nlohmann_json 3.5.0

Add 'MathFu' package (ruslo#1687)

Merge pull request ruslo#1686 from rbsheth/pr.gRPC

Update 'gRPC' to v1.17.2-p0

Add 'SimpleSignal' package (ruslo#1685)