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

gcc: Add support for Apple's Block extension

Block objects [1] are a C-level syntactic and runtime feature. They
are similar to standard C functions, but in addition to executable
code they may also contain variable bindings to automatic (stack)
or managed (heap) memory. A block can therefore maintain a set of
state (data) that it can use to impact behavior when executed.

This port is based on Apple's GCC 5646 with some bugfixes from
Apple GCC 5666.3. It has some small differences with the support
in clang, which remains the recommended compiler.

Perhaps the most notable difference is that in GCC that __block
is not actually a keyword, but a macro. There will be workaround
for this issue in a near future. Other issues can be consulted in
the clang documentation [2]

For better compatiblity with Apple's GCC and llvm-gcc some related
fixes and features from Apple have been included. Support for the
non-standard nested functions in GCC is now off by default.

No effort was made to update the ObjC support since FreeBSD doesn't
carry ObjC in the base system, but some of the code crept in and
was more difficult to remove than to adjust.

Reference:
[1]
https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/Blocks/Articles/00_Introduction.html
[2]
http://clang.llvm.org/compatibility.html#block-variable-initialization

Obtained from: Apple GCC 4.2
MFC after: 3 weeks

gcc: revert Rvalue references.

They are very useful but at this time I prefer not to figure out
some minor conflicts with the bigger Apple's blocks support
patch that is being worked on for current.

gcc: merge upstream fix and new feature.

Fix for PR c++/29928

Add support for Rvalue references as described here:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2118.html

Obtained from: gcc 4.3 (rev. 124724, 125211; GPLv2)
MFC after: 2 weeks

gcc: more diff reductions against Apple GCC.

Mostly cosmetical changes to aid further merges.

Obtained from: gcc 4.3 (rev. 120611, 124839; GPLv2)
MFC after: 1 week

libiberty: upstream updates.

There is a new ChangeLog.gcc43 file but most notable:

* floatformat.c (get_field): Fix segfault with little-endian word
order on 64-bit hosts.
(put_field): Likewise.
(min): Move definition.

gcc/cp/ChangeLog
2007-05-04 Geoffrey Keating <geoffk@apple.com>

PR 31775
* mangle.c (write_mangled_name): Mangle static variable names.
(write_unqualified_name): Use local-source-name for
namespace-scope static variables.
(Completes FreeBSD's r258017 )

Obtained from: gcc 4.3 (rev. 118552, 120097, 20698, 120702,
121364, 122972, 126588; GPLv2)
MFC after: 2 weeks

This commit was generated by cvs2svn to compensate for changes in r169689,
which included commits to RCS files with non-trunk default branches.

GCC 4.2.0 release.

Gcc 3.4.4 release.

Gcc 3.4.2 20040728.

Gcc 3.3.1-pre as of 2003-07-11.

Gcc 3.2.1 release virgin vendor import. (19-Nov-2002)

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

Gcc 3.1.0 pre-release from the FSF anoncvs repo on 9-May-2002 15:57:15 EDT.

Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0.
These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.