After some speed debates occurred in the Delphi community, I've rewritten the _CopyRecord function of the system.pas unit, with speed in mind.
I managed to get our RTL work with Delphi 2007. Only System.pas and SysInit.pas are supplied (and needed) for Delphi 2007. Even if some John O'Harrow or Pierre Le Riche modifications were already included in Delphi 2007, some of my tricks are unique and could be useful even on this compiler.
It did appear that some diverse VCL source code files were provided, with the same official version. So I made some diverse patches, in order that everyone could get our enhancements.
Tonight, I received an email from Nick Hodges, the Delphi Development Manager, about our distribution of some corrections/enhancements of the Delphi 7 System and VCL source code.