synchronize the cxx flags passed to configure with those for c.
treecba1ba1a8d1c388248d673138c8225f8a6b89f9e
-rw-r--r-- 78816 .gitignore
-rw-r--r-- 321 ACKNOWLEDGEMENTS
-rw-r--r-- 3019 LEGAL
-rw-r--r-- 24679 LICENSE
-rw-r--r-- 2849 LICENSE.Author
-rw-r--r-- 18009 LICENSE.GPL
-rw-r--r-- 26430 LICENSE.LGPL
-rw-r--r-- 10173 Makefile.in
-rw-r--r-- 17539 _gdbinit
-rw-r--r-- 2750 acinclude.m4
-rw-r--r-- 16748 aclocal.m4
drwxr-xr-x - arch
drwxr-xr-x - boot
drwxr-xr-x - bootstrap
drwxr-xr-x - compiler
drwxr-xr-x - config
-rwxr-xr-x 493933 configure
-rw-r--r-- 117441 configure.in
drwxr-xr-x - developer
drwxr-xr-x - external
drwxr-xr-x - images
-rw-r--r-- 23928 license.html
-rw-r--r-- 701 make.defaults
-rw-r--r-- 737 mmake.config.in
-rw-r--r-- 1995 mmakefile
drwxr-xr-x - rom
drwxr-xr-x - scripts
drwxr-xr-x - tools
drwxr-xr-x - workbench