version-3.51.3
Another minor formatting fix.
Fix utility compilation issues with MSVC.
Fix another problem with ".expert" and virtual tables. [forum:/forumpost/49d6a19ec|Forum post 49d6a19ec].
Use 64-bit memory allocations everywhere in the expert extension.
Add header guard to the expert extension.
Cygwin-centric fixes from Jan Nijtmans.