crop factor = 0.8

given up on alignment issue ( i believe it's because surfaceview is not
in the center of screen, but is shifted up / down,... tried fixing it by
setting gravity everywhere to center, but nothing worked...)
so now, we just use a bigger crop factor
Merge remote-tracking branch 'origin/master'

Conflicts:
	res/layout/capture.xml
	src/com/google/zxing/client/android/CaptureActivity.java