Update PJSysInfo.pas

[weirdo12]

Added $EXTERNALSYM code for C++Builder compatibility. For example:

OSVERSIONINFOEXA = _OSVERSIONINFOEXA; {$EXTERNALSYM OSVERSIONINFOEXA}

Without this, C++Builder sees OSVERSIONINFOEXA as a redefinition of OSVERSIONINFOEXA in winnt.h.

[delphidabbler]

Hi @weirdo12

Sorry to take so long to reply. I've been taking a break from coding and have just noticed your issue & PR.

I'm quite busy just now but will try to review it next week.

BTW you're just in time. My plan is to update the code to detect Win 11 25H2 and re the end of Win 10 support and then archive this project. I'll roll your update into that final release.

[weirdo12]

Perfect!