Update information pertaining to building external components, as well as notes on x64 builds.  This file now accurately describes the build process as is; however, there's still a lot of room for improvement, especially with regards to how we build Tcl/Tk, Tix, and OpenSSL.  Watch this space for further improvements.

Added Py_BUILD_CORE_MODULES macro to set WINVER and NTDDI_VERSION to Windows 2000 for core modules, too
Added -d option to build.bat (same as -c Debug) and fixed warning about /build option
Updated Windows related readme.txt files

Use vsbuild instead of devenv in build.bat and _bsddb.vcproj

based on the VS 2008 build directory to PC/VS8.0. The script
PCbuild/vs8to9.py was added to sync changes from PCbuild to PC/VS8.0.

Kristjan, the initial creator of the PCbuild8 directory is fine with the replacement. I've moved the new version of the VS 2005 build directory next to the other legacy build directories. The new sync script is based on the work of wreck and syncs changes in the project, property and solution files.

* Removed a #define from pyconfig.h. The macro was already defined a few lines higher.
* Fixed path to tix in the build_tkinter.py script
* Changed make_buildinfo.c to use versions of unlink and strcat which are considered safe by Windows (as suggested by MvL).
* Removed two defines from pyproject.vsprops that are no longer required. Both are defined in pyconfig.h and make_buildinfo.c doesn't use the unsafe versions any more (as suggested by MvL).
* Added some more information about PGO and the property files to PCbuild9/readme.txt.

Are you fine with the changes, Martin?

The macros _WIN32, _WIN64 and _M_X64 are defined by the compiler. The VS 2008 IDE doesn't know about (some) of the macros and can display wrong information. In my case a section #ifdef _WIN64 was grayed out although the platform was x64. I've added the macros to pyproject.vsprops and x64.vsprops.
I've also added a paragraph about the property files to the readme and fixed the order of pyupdate > pyinstrument.

Moved the _DEBUG and NDEBUG macros to two new property files.
Fixed #1527 Problem with static libs on Windows
Updated README.txt

I've finished the last task for the PCbuild9 directory today. I don't think there is much left to do. Now you can all play around with the shiny new VS 2008 and try the PGO builds. I was able to get a speed improvement of about 10% on py3k.
Have fun! :)

Remove remarks on size_t problems.

Make buildbot slaves automatically fetch bzip2 1.0.3.

Will backport to 2.4.