common-macros.itexi: Simplify `@sourceimage` macro.
Use only three arguments and make the alttext
argument identical to the
filename (without extension).
Update all callers by running the following script.
for i in find . -name '*.itexi'
; do
sed -i -e 's/(@sourceimage{[^}],[^}],[^}]),[^}]}/\1}/' $i
done
for i in find . -name '*.itely'
; do
sed -i -e 's/(@sourceimage{[^}],[^}],[^}]),[^}]}/\1}/' $i
done
Note that some macros calls had 'png' or 'jpg' as an alttext
value, which
doesn't make sense. This is due to older modifications of the
@sourceimage
macro: Previous versions also passed an extension as an
argument, which is no longer the case, and the calls weren't correctly
updated after the change.