Complete revamp of PCBuild8 directory. Use subdirectories for each project under the main pcbuild solution. Now make extensive use of property sheets to simplify project configuration. x64 build fully supported, and the process for building PGO version (Profiler Guided Optimization) simplified. All projects are now present, except _ssl, which needs to be reimplemented. Also, some of the projects that require external libraries need extra work to fully compile on x64.
change the version number is no longer required.
Instead, a make_versioninfo.exe is compiled, which spits out an
include file for python_nt.rc.
Will backport to 2.3
Kristján Valur Jónsson
Thomas Heller