Patch for 64-bit HP-UX libstdc++-v3

[Steve Ellcey]

(Sorry if this is a repeat, but I did get a bounce message from
gcc.gnu.org)

I just had a thought about this patch making libstdc++-v3 dependent on
libiberty.  Isn't linking a shared library against an archive one
considered a bad thing?  libstdc++-v3 can be built shared or archive but
it looks like libiberty is always archive only.  Does this introduce
problems when libstdc++-v3 is linked against libiberty?

Steve Ellcey
sje@cup.hp.com