hg: panama/dev: Avoid generating clang.properties in code base, use -D instead.

[henry.jen at oracle.com]

Changeset: fea8c1accdeb
Author:    henryjen
Date:      2018-03-31 10:21 -0700
URL:       http://hg.openjdk.java.net/panama/dev/rev/fea8c1accdeb

Avoid generating clang.properties in code base, use -D instead.

! make/RunTests.gmk
! make/autoconf/basics.m4
! make/autoconf/spec.gmk.in
! test/jdk/com/sun/tools/jextract/jclang-ffi/TestJextractFFI.java
- test/jdk/com/sun/tools/jextract/jclang-ffi/clang.properties.in