Basically allow -Dglass.platform=headless to enable headless, not only -Dglass.platform=Headless. This makes it consistent with other options (macosx, windows, linux, gtk and ios) as well was less error-prone for enabling it.
------------- Commit messages: - Allow headless (lowercase) Changes: https://git.openjdk.org/jfx/pull/1864/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1864&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8364687 Stats: 3 lines in 1 file changed: 3 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jfx/pull/1864.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1864/head:pull/1864 PR: https://git.openjdk.org/jfx/pull/1864
