Add yet more Objective-C++

[Mike Stump <mrs at apple dot com>]

Add yet more Objective-C++.  This patch depends upon the 
objcp-2.diffs.txt patch.

This patch is more complex than the last, but should be very safe from 
the C++/C perspective.  From the Objective-C perspective, is is more 
dangerous, but I'll deal with any fallout that happens.

While I sure there are lots of little rearrangements or restructuring 
possible, I'd like to avoid some forms to simplify merging in the 
remaining bits.  I have the Objective-C++ frontend tested and 
productized in the current form, rewrites to it that break 
Objective-C++, before I get all the testing bits in, would be painful.  
This patchset is almost all of the code, the remain bits are gcc/doc 
and gcc/testsuite and gcc/objc as I recall.

It survived a regtest bootstrapped on powerpc-apple-darwin8 with gcc, 
g++, libffi, libjava, libstdc++ and objc.  Well, not really:

===== g++.sum =====
===== gcc.sum =====
===== libffi.sum =====
===== libjava.sum =====
Tests that now work, but didn't before:

Thread_Sleep output - source compiled test

===== libstdc++.sum =====
===== objc.sum =====

but, I think that hit a fork failure due to my having apparently way 
too many processes on my box.  I also tested a rebuild in a 
--enable-langauges=all directory, and that went ok as well.

Needs C/C++ approval at least.

Ok?

Attachment: objcp-3.diffs.txt
Description: Text document