more gcc-3.0 / libstdc++v3 improvements

[Scott J. <sc...@ac...>]

Attached is a patch that adds several important improvements to
ivtools-0.9.4 when compiling with gcc-3.0 (over and above the changes
incorporated in that release).  It reduces optimization from -O6 to -O2,
which ensures the compilation will complete in a reasonable amount of
time.  It fixes the export/import mechanism's use of libstdc++ v3
iostreams.  And it makes the necessary changes for building with ACE.

These changes are also incorporated in the cvs repository at
http://sourceforge.net/projects/ivtools

It looks like the worst is over in migrating to gcc-3.0, and I'm really
relieved.

Scott Johnston
http://www.ivtools.org