[cp-patches] cp-tools: fix build options

[Andrew Haley]

Tom Tromey writes:
 > 
 > No, -w is translated by the gcj-ish ecj front end that is being
 > invoked in the libjava build.  So the patch in question is actually
 > specific to gcj.

OK, so help me out here, please: how do you solve the problem for
libgcj.jar?  I'm only trying to do the same thinsg with tools.jar.  I
cannot begin to tell you how much I hate hacking these build scripts.

Andrew.