Add ftcolor.c to the freetype sources we import as it is needed for Emoji rendering.
------------- Commit messages: - 8298974 Changes: https://git.openjdk.org/jdk/pull/11728/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11728&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8298974 Stats: 156 lines in 1 file changed: 156 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/11728.diff Fetch: git fetch https://git.openjdk.org/jdk pull/11728/head:pull/11728 PR: https://git.openjdk.org/jdk/pull/11728