Edit>Floats

[Jean-Marc Lasgouttes]

I have implemented the necessary machinery to revive the Edit>Floats
menu. This is a kludge which should be revisited when we switch to
NEW_INSETS.

I noticed a strange problem while testing: create a new file, type a
few random characters, and try to use the left/right keys: right key
toggle smallcaps and left key goes right. This is obviously not
right...

This is with xforms 0.88, and I guess it is recent.

JMarc