Add change log entry.

Author: peter-hofer

substratevm/CHANGELOG.md

@@ -17,6 +17,7 @@ This changelog summarizes major changes to GraalVM Native Image.
     1. `run-time-initialized-jdk` shifts away from build-time initialization of the JDK, instead initializing most of it at run time. This transition is gradual, with individual components of the JDK becoming run-time initialized in each release. This process should complete with JDK 29 when this option should not be needed anymore. Unless you store classes from the JDK in the image heap, this option should not affect you. In case this option breaks your build, follow the suggestions in the error messages.
 * (GR-63494) Recurring callback support is no longer enabled by default. If this feature is needed, please specify `-H:+SupportRecurringCallback` at image build-time.
 * (GR-60209) New syntax for configuration of the [Foreign Function & Memory API](https://github.com/oracle/graal/blob/master/docs/reference-manual/native-image/ForeignInterface.md)
+* (GR-64584) Experimental option `-H:+RelativeCodePointers` to significantly reduce relocation entries in position-independent executables and shared libraries.
 
 ## GraalVM for JDK 24 (Internal Version 24.2.0)
 * (GR-59717) Added `DuringSetupAccess.registerObjectReachabilityHandler` to allow registering a callback that is executed when an object of a specified type is marked as reachable during heap scanning.