This patch adds a configure option --with-jtreg=/path/to/jtreg.
It also changes how BASIC_FIXUP_PATH works on unix platforms, making it behave more like it's documented and like on windows. Relative paths are made absolute and special variables like ~ are expanded. This macro didn't have a lot of uses that weren't windows specific so I doubt it will affect anything in a bad way.
http://cr.openjdk.java.net/~erikj/8007129/webrev.root.01/ /Erik
