Why MACOSX_UNIVERSAL == true by default?

[Vladimir Ivanov]

Hi,

Does anybody know/remember why MACOSX_UNIVERSAL=true by default?

I'm asking, because JDK layout on MacOS X differs from other platforms 
and to make export_*_jdk build targets work correctly, you need to 
specify ALT_MACOSX_UNIVERSAL=false.

I'd like to fix that (change default value to false), but I have no idea 
why it was set to true in the first place.

Best regards,
Vladimir Ivanov