Re: [PATCH] glibc 64-bit obstack support

[Roland McGrath]

This is definitely not going to make it into glibc-2.20, so you might want
to wait until we're out of release freeze to worry too much about the
glibc-oriented bits.  Meanwhile, you can iron out your other cleanups with
gnulib folks.

For glibc you need to do some more work to make the provision of
compatibility symbols clean.  The entire compatibility build needs
to be protected with a SHLIB_COMPAT test.  The compatibility symbols
need to be made unavailable at link time, using versioned_symbol macros.