As noted here:

http://gcc.gnu.org/ml/java/2009-07/msg00067.html

The filename generation in the out of memory dumps is a bit screwed up.  
This patch restores it to its intended state.

Bootstrapped and regression tested on x86_64-pc-linux-gnu with no 
regressions.

OK to commit?

2009-07-28  David Daney  <ddaney@caviumnetworks.com>

    * gnu/gcj/util/natGCInfo.cc (nomem_handler): Use oomDumpName as
    dump file name base.