move QT+=widgets (and printsupport) statements before the install
statements, and de-duplicate some cases.
also move some TARGET assignments to a more conventional place.
Change-Id: I6140d8611680f66c24490e5894e4eb90cae95635
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
it's confusing for the users if the examples' project files contain code
to install their own sources. also, this constitutes an enormous code
duplication, and lots of mistakes. consequently, automate it.
more or less as a side effect, this also removes the entirely meaningless
target installs in subdirs projects.
Task-number: QTBUG-28184
Change-Id: I9fc1367a06db9e2c46aeb67d68729a4f67163ef9
Reviewed-by: hjk <qthjk@ovi.com>
