Import 26392346ea: Fixed TargetNvtt linking OpenMP when using older than CMake 3.9 (by Maki)

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This is an automated proposal to look at a commit made by Maki and import it into Overte

Commit:	26392346eac01532b5a1039e9cd414182e87a12e
Author:	Maki
Date:	Fri, 24 Apr 2020 23:16

Fixed TargetNvtt linking OpenMP when using older than CMake 3.9

Stats:

Filename	Stats	Lines	Added	Removed	Lines in blame
cmake/macros/TargetNvtt.cmake		10	8	2	⚠ 0
1 files	-	10	8	2	0

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