https://bugzilla.redhat.com/show_bug.cgi?id=1088033
--- Comment #9 from Alessandro Ceschini alescesc1986@yahoo.it --- Hello Pravin,
1. I don't know much about that, I've not been running a Windows platform for ten years. Back in Windows XP days, no, there was no support for Oldstyle figures, but then there was also no support whatsoever for Opentype so the issue was rather moot. I know the latest versions of Office DO include support for Opentype, so I guess Microsoft fonts may have been updated. But it's only a guess.
2. I'm sorry, I'm no font designer, I'm afraid I cannot help you with that.
Regards,