The "Vector Registers as Part of VSRs" figure was very large,
especially as it immediately follows an almost identical figure.
Before this change:
fig-fpr-vsr.png: PNG image data, 663 x 300...
fig-vr-vsr.png: PNG image data, 1367 x 608...
After this change:
fig-fpr-vsr.png: PNG image data, 663 x 300...
fig-vr-vsr.png: PNG image data, 645 x 287...
I chose this size because the actual side boundaries of the
table most closely match in size.
The scaling, using The GIMP, resulted in somewhat blurry lines,
but still quite clear enough, and good enough.
Signed-off-by: Paul A. Clarke <pc@us.ibm.com>