#1
Hi, I'm trying to do that funky blues 5-6 modulation of a 7 chord. In this case a barred G7. But lo and behold! My asian hands are too small to reach that 6 with my pinky! This has never happened before! My fingers have never been too short to form a chord! Is there any other way to play this without barring? My guitar future is flashing before my eyes now.
#2
I know this isn't what you were asking for, but if you want to be able to stretch more check out the beginning warm-ups from John Petrucci's "Rock Discipline". It has some great stretching exercises.
#3
Try to hold the guitar higher up. If you're standing, lower the length of your guitar strap, and if you're sitting down try to adjust your position so that the guitar is higher up, almost by your chest.

I find that this allows me to stretch for certain chords much easier.