[DrJava] Update util and build-common.xml

[Charles R. <cr...@ri...>]

The latest commit includes changes to both the util package and the 
build-common.xml, so you'll need to run "ant update" in util and "cvs 
update build-common.xml" in the cs directory.

(The commit converts all System.out and System.err output to go to the 
DrJava console, rather than the system console.  This includes JUnit 
tests, internal debugging statements, and anywhere else in the main JVM 
that calls System.out and System.err.)

Charlie