hg: jdk/sandbox: 8225140: Build fails if directory contains 'unix'

[chris.hegarty at oracle.com]

Changeset: 1cccaaf46c7b
Author:    erikj
Date:      2019-06-03 10:52 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/1cccaaf46c7b

8225140: Build fails if directory contains 'unix'
Reviewed-by: tbell

! make/common/JdkNativeCompilation.gmk
! make/lib/Awt2dLibraries.gmk