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[Driver] Add disabled-by-default -Wuse-ld-path for the deprecation warning for…

Authored by MaskRay on Sep 19 2020, 3:49 PM.

Description

[Driver] Add disabled-by-default -Wuse-ld-path for the deprecation warning for -fuse-ld=/abs/path

The warning is currently not under a -W option, so it cannot be suppressed.
This is annoying for the widespread build system Bazel when specifying the path to gold
https://github.com/bazelbuild/bazel/commit/cdd0c3cdba270115940e8ca5ec8104cbcd694671

I have notified them about using --ld-path= forwards
https://github.com/bazelbuild/bazel/pull/8580#issuecomment-694321543
but we have to give some transitional period.

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D87837