Add Ant action to jtreg. Suggested spec
@ant [-f file] [target]

if -f file omitted, build.xml is used in the test.src directory
if target is omitted the default target for the build file is used
"standard" jtreg properties should be set {i.e. test.src etc)

This would open up the use of better cross-platform scripting facilities.
Ditto @make [-f file] [target]

Would (presumably) assume that "make" is on the user's PATH, perhaps checking for gnumake first.