Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

libstdc++: merge non-abi changes from Apple's developer tools

Take some changes from Apple's Developer Tools 4.0 [1]:

block.patch
emergency-buffer-reduction.patch
test_cleanup.patch

vector_copy_no_alloc.patch
problem/6473222 copy-constructing a std::vector from an
empty std::vector calls malloc

2008-10-27 Howard Hinnant
stl_tree_system_header.patch
Added #pragma GCC system_header to stl_tree.h.
copy_doc.patch
Corrected documentation concerning copy in stl_algobase.h.
string_compare.patch
Fixed basic_string.h, basic_string.tcc, incorrect 64bit to
32bit narrowing.

Reference:

[1] http://opensource.apple.com/source/libstdcxx/libstdcxx-39/patches-4.2.1/

Obtained from: Apple
MFC after: 1 month

This commit was generated by cvs2svn to compensate for changes in r169691,
which included commits to RCS files with non-trunk default branches.

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

Gcc 3.4.2 20040728 C++ support bits.

Gcc 3.2.1-prerelease libf2c bits from the FSF anoncvs repo gcc-3_2-branch on 1-Sep-2002 00:00:01 EDT.

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