Suggested fix for getting the correct registry key for XE2 C++ and up…

[MHumm]

… as of Mantis issue 6394
http://issuetracker.delphi-jedi.org/view.php?id=6394
The discussion here gives the impression that \Win32 is needed in the C++ XE2 and above registry key.

[obones]

This suggested fix cannot work, there are multiple sub keys in the registry, of which two are of interest to the JCL (and JVCL for that matter): Win32 and Win64

So this cannot be placed in a constant.
I've had a look at the registry for the installs I have here, and the LibraryPath is already populated properly (ie, in both subkeys) for BDS11 and upper.
The SearchPath, however, seems to be missing the subkey.

A more thorough investigation needs to be done in order to write a proper fix.