Merge r339424 into the 7.0 branch: clang-cl: accept -fcrash-diagnostics-dir=

[llvmbot]

Bugzilla Link	39411
Resolution	FIXED
Resolved on	Oct 25, 2018 12:37
Version	7.0
OS	Windows NT
Blocks	#38454
Reporter	LLVM Bugzilla Contributor
CC	@rnk,@tstellar
Fixed by commit(s)	r339424 r345304

Extended Description

Trivial driver fix for easier crash reporting on Windows.

llvm-mirror/clang@8c7ddf2

[rnk]

Ship it! :)

[tstellar]

Merged: r345304