Reenabled text to speech using QtSpeech as an optional dependency. Based on frameworks branch.
Review Request #122553 - Created Feb. 13, 2015 and submitted
If QtSpeech (dev branch) is built and installed this builds and works very well.
It builds and runs well with qtspeech. I'll test building when qtspeech isn't installed tomorrow.
Updated to fix errors when building without QtSpeech installed.
Revision 3 (+126 -161)