install.sh: Perfomance: Use more shell builtins#106

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mbargull wants to merge 3 commits intorust-lang:masterfrom

mbargull:faster-install.sh

Commits on Feb 19, 2021

install.sh: Perfomance: Use more shell builtins
mbargull
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Commits on Feb 22, 2021

install.sh: Cache abs_path and make_dir_recursive
mbargull
committed

Commits on Apr 7, 2021

install.sh: Use test -d for make_dir_recursive
mbargull
committed