Ensure make files look on the include path or in PHASE_MAKEDIRS for customizations.
Change also adds a tidy-up that improves readability. ------------- Commit messages: - 8259942: Enable customizations in CompileJavaModules.gmk and Main.gmk Changes: https://git.openjdk.java.net/jdk/pull/2134/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2134&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8259942 Stats: 5 lines in 3 files changed: 1 ins; 2 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/2134.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/2134/head:pull/2134 PR: https://git.openjdk.java.net/jdk/pull/2134
