- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Undo the earlier revert of the ABI change in libsupc++. On further discussion,
posting an errata notice with 9.1 is the less painful solution.

Approved by: dim (mentor)

Revert ABI breakage in libsupc++.

Unfortunately, the ABI was broken upstream for the 4.2 release, which we
imported. We then shipped the broken version for several years and certain
ports (e.g. libobjc2) depend on it, so we're stuck with it for now...

We should revisit this for 10.0, since we're allowed to break the ABI then, but
until then we should keep the ABI we shipped with 8.x and 9.x.

Reviewed by: kan
Approved by: dim (mentor)
MFC after: 1 week

Update libstdc++ with small updates from the latest rev. (135556)
from the gcc 4.2 branch.
The libraries in the gcc-4_2-branch remained under the LGPLv2.

The changes can be reproduced with the following command:

svn diff svn://gcc.gnu.org/svn/gcc/branches/gcc-4_2-branch/libstdc++-v3
-r 127959:135556

Reviewed by: mm
Approved by: jhb (mentor)
MFC after: 2 weeks

This commit was generated by cvs2svn to compensate for changes in r171827,
which included commits to RCS files with non-trunk default branches.

GCC 4.2.1 release C++ standard library and runtime support code.

GCC 4.2.0 release C++ standard library and runtime support code.

Gcc 3.4.2 20040728 C++ support bits.

Gcc 3.3.1-pre 2003-07-11 C++ support bits.

Gcc 3.1.0 pre-release's C++ support bits from the FSF anoncvs repo
on 9-May-2002 15:57:15 EDT.