Patch for Review: Build all libjava .class files at once (Updated)

[Per Bothner]

Tom Tromey wrote:

> Really, we'd like to find a way to write this code so that it doesn't
> depend on GNU make at all, but still works on these limited systems.
> Nobody has tried to figure out how to do that yet.  We don't even know
> if it is reasonably possible.

Just assume GNU make.  The SC is leaning towards requiring it.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/