x86-64: Add GLIBC_ABI_GNU2_TLS version [BZ #33129]

x86-64: Add GLIBC_ABI_GNU2_TLS version [BZ #33129]

Programs and shared libraries compiled with -mtls-dialect=gnu2 may fail
silently at run-time against glibc without the GNU2 TLS run-time fix
for:

https://sourceware.org/bugzilla/show_bug.cgi?id=31372

Add GLIBC_ABI_GNU2_TLS version to indicate that glibc has the working
GNU2 TLS run-time.  Linker can add the GLIBC_ABI_GNU2_TLS version to
binaries which depend on the working GNU2 TLS run-time:

https://sourceware.org/bugzilla/show_bug.cgi?id=33130

so that such programs and shared libraries will fail to load and run at
run-time against libc.so without the GLIBC_ABI_GNU2_TLS version, instead
of fail silently at random.

This fixes BZ #33129.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>