Some jtreg tests copy files and directoies from source directory to current directory.
Of course they doesn't do anythig with permissions. So we could have read only files in our work directory. If test re-write these files or create new files in these copied directories
it fails with permission denied.
I suppose that if anyone tries to run tests with jtreg from /java/re/jdk/8/promoted/latest/ws/jdk/test/... it should get same failures.

There are several ways to fix this CR.
1) update all tests to use umask (or set permissions after cp)
2) update jtreg to use umask
3) always copy tests before execution and make files writable


I suppose it is the reason of 7110223.
The list of tests (from 7146361):
closed/java/net/URLClassLoader/ResExists.java
java/lang/ClassLoader/Assert.java
java/rmi/registry/readTest/readTest.sh
java/util/zip/ZipFile/ReadZip.java
sun/net/www/protocol/jar/jarbug/run.sh
tools/javac/ClassPathTest/ClassPathTest.sh