Implementing true support for JAR files in ABCL has taken quite a bit more time and effort as can be seen by the rejection of my mail of few minutes ago to the list for being too long.
I've posted my [patches with explanation to the web][1], as I am not sure when or if the moderator will let the original message through.
[1]: http://slack.net/~evenson/abcl/jar-file
About the only disadvantage for the current patch is that I had to remove the use of ZipCache for entries as I was developing as it didn't make much sense. I haven't really noticed too much of a time difference for loading or compiling ABCL.
Comments? Once I get things tested under Windows, and play around with the loading from http support, I intend to commit to trunk.