java/1141: don't use StringBuffer for string concatenation

[tromey@gcc.gnu.org]

Synopsis: don't use StringBuffer for string concatenation

Responsible-Changed-From-To: apbianco->tromey
Responsible-Changed-By: tromey
Responsible-Changed-When: Tue Dec 11 10:26:52 2001
Responsible-Changed-Why:
    I'm handling this.
State-Changed-From-To: analyzed->closed
State-Changed-By: tromey
State-Changed-When: Tue Dec 11 10:26:52 2001
State-Changed-Why:
    I've implemented this.  It doesn't stack-allocate
    the StringBuffer, but it does remove the unnecessary
    synchronization.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&pr=1141&database=gcc