Patch to support pre-c++11 compiler

[GoogleCodeExporter]

Hi, All, I made some changes for old gcc:

* Add a btree_config.h
* Config type_traits according to whether c++11 is support and enabled by 
compiler.
* Allow user define size_type to be size_t, which make the size() interface of 
btree containers compatible with STL totally.
* Remove dependency of the __COUNTER__ macro in bench test, which was 
introduced since gcc 4.3, make cpp-btree compile with older compiler.

Tested on gcc 4.1.2 & 4.7.2, w/ & w/o c++11 enabled.

Original issue reported on code.google.com by chen3feng on 8 Apr 2013 at 5:00

Attachments:

• cpp-btree-1.0.1-non-c++11.patch

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

And fixed all warnings of strict-aliasing.

Original comment by chen3feng on 8 Apr 2013 at 5:06

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Your new file "btree_config.h" does not have a license listed at the top. Is 
your intent to make that AL2? I'm very interested in this patch, but cannot use 
it as is.

Thanks.

Original comment by sor...@gmail.com on 8 Dec 2013 at 10:40

[GoogleCodeExporter]

I declare： I accept make the new file btree_config.h follow AL2，so you are
welcome to change it as your wish, thanks.
2013-12-9 AM6:40于 <cpp-btree@googlecode.com>写道：

compiler

Is your intent to make that AL2? I'm very interested in this patch, but
cannot use it as is.

Original comment by chen3feng on 9 Dec 2013 at 12:10