In jdk/makefiles, there are a couple of files that are left-overs from old build system, which should probably get some better home.

* jprt.gmk and jprt.properties. Are these necessary?
* PatchList.solaris. Is this necessary? I can't find any references to it from build-infra.
* jpda/jdwp/jdwp.spec. Does this really belong in the make directory? If so, we should probably put it in a "support" directory and name it jdpa_jdwp.spec instead or so, to get rid of the deep hierarchy for a single file.
* The "sun" directory. I really dislike having source code without a proper directory! We should create a "src" directory and move the two ToBin.java helper apps there instead, unless we should put them somewhere better (or get rid of them alltogether and replace with shell logic..?)