kawa build

[Per Bothner]

Chris wrote:

> looks like it is actually my local CLASSPATH probably pointing to an 
> old version of
> kawa. Suggest that the makefile should perhaps ignore your classpath. 

Well, there are some problems.

First, it is possible that some Java compilers may require CLASSPATH to 
be set.

Second, some optional parts of Kawa may require external libraries.  For
example if you configure Kawa with --enable-servlet you need to set the
CLASSPATH so it can find a servlet library.

    --Per