[PyQt] configure.py: -e semantic

[Giovanni Bajo]

Hi Phil,

currently, -e MODULE means "activate MODULE, checking that it's built in 
Qt too". This is a little counter-intuitive to me: I would expect "-e 
MODULE" to mean "I really really want MODULE to be there", and thus 
configure.py to abort if the module(s) I specified are not built in Qt 
and thus cannot be compiled.

Do you instead consider the current behaviour better, or at least just 
as potentially useful? If not, I will submit a patch to change it so 
that configure.py fails if the module can't be activated.

Otherwise, would you mind if I add a way to tell configure.py to abort 
if the enabled modules can't be activated?
-- 
Giovanni Bajo