8380078: Update GIFlib to 6.1.2 Backport-of: 76e7c9e68a42b41df1f309815d9f0111fd967d1f
The JDK 17 Updates project uses two GitHub repositories. Updates are continuously developed in the repository jdk17u-dev. This is the repository usually targeted by contributors. The jdk17u repository is used for rampdown of the update releases of jdk17u and only accepts critical changes that must make the next release during rampdown. (You probably do not want to target jdk17u).
For more OpenJDK 17 updates specific information such as timelines and contribution guidelines see the project wiki page.
For build instructions please see the online documentation, or either of these files:
See https://openjdk.java.net/ for more information about the OpenJDK Community and the JDK.