EricFromCanada 9e4fb40f92 docs: update descriptions of git- and curl-related vars ...

Note that the `HOMEBREW_FORCE_BREWED_` vars are automatically set if the system `git` and `curl` are too old. Drop mention of `HOMEBREW_GIT` which isn't user-settable.

2018-10-26 23:47:59 -04:00

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docs: update descriptions of git- and curl-related vars

2018-10-26 23:47:59 -04:00

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