kdelibs and Qt version dependency

[Albert Astals Cid]

On May 19, Dawit Alemayehu commited a change that uses 
QSslConfiguration::testSslOption that is only available in Qt 4.8

This means that both kdelibs 4.8.4 and kdelibs 4.9 now depend in Qt 4.8 
instead Qt 4.7

I want to ask the kdelibs maintainers:

a) Do you think it makes sense to change our Qt required version from
Qt 4.7 in kdelibs 4.8.3
to
Qt 4.8 in kdelibs 4.8.4
?

b) Do you think kdelibs 4.9 should depend in Qt 4.8 or not?

Cheers,
  Albert