[gtkada] Glade (Gate) bug when generating code for large powers of 10.

[Arnaud Charlet]

Note that for people interested in contributing patches in an
"integratable" form, including style checks, the recommendation is
to create an empty file called .devel in the directory gtkada/src,
e.g:

touch gtkada-2.2.1/src/.devel

which will then enable additional style checks when compiling GtkAda.

Thanks again for your contribution, we hope that other people will also
contribute this kind of useful patches !

Arno