Remvoed many pre steps, build requires and patching. Removed build.
added dependencies on portables
extracted portabels to BUILD
keep systemtap
todo, repack it properly
removed nss setup, enabled buildr and tuned "install"
check debuginfo for jre only
Print release
repacked portables
Remove javadoc.zip only for release build
Update release notes to actually reflect OpenJDK 18 and subsequent releases 18.0.1 & 18.0.1.1
Print release file during build, which should now include a correct SOURCE value from .src-rev
Update tarball script with IcedTea GitHub URL and .src-rev generation
Include script to generate bug list for release notes
Update tzdata requirement to 2022a to match JDK-8283350
