[build-script] Add a flag for sccache#34133

Merged

shahmishal merged 4 commits intoswiftlang:mainfrom

porglezomp-misc:twist-it-bop-it-sccache-it

Oct 5, 2020

Commits on Sep 30, 2020

Commits on Oct 1, 2020

[build-script] Fix CMake sccache test
porglezomp
committed

Commits on Oct 2, 2020

Fix formatting issue
porglezomp
committed