I'm trying to use jdk9-b34 and see that rt.jar and friends are gone. Are we in jigsaw-land yet? javac doesn't seem to know about any -modulepath flag yet. (javac -help, javac -X is module-unaware) How do I specify a bootclasspath for jdk9-b34? You can't use a jimage with -bootclasspath, and -modulepath doesn't seem to work (even though I see references to it in the javac sources)
How will one be able to use javac/jdk10 to target jdk9? Traditionally, -target 9 -source 9 and -bootclasspath with some collection of jdk9 jar files. But jdk9 bootclasspath jars are gone, and I don't see anything to replace it? (Background: trying to fix up jsr166 ant build script for jdk9-latest)
