[opendx-dev] dx configure.in acconfig.h

[rhh]

Update of /src/master/dx
In directory opendx.watson.ibm.com:/tmp/cvs-serv48610

Modified Files:
        configure.in acconfig.h 
Log Message:
Re-enable --with-large-arenas support for SGI 64-bit, and add a bag o'
patches to make it stable.