Fixes for several compile warnings and errors

[Vogtinator]

Many projects build without Qt keywords enabled, so signals and slots are syntactically invalid. Also fix a compile error and warnings about a superfluous semicolon.

[pipacs]

Not a bad idea, but then let's implement it properly:

• You replaced signals, slots, but forgot about emit
• The examples shouldn't be changed as they build with keywords enabled

[Vogtinator]

Both issues fixed, please repoen this PR as I can't do it.

[pipacs]

Strange: I can’t reopen this either. Please submit it as a new change.

Thanks,
Akos.

On 01 Jul 2016, at 19:52, Fabian Vogt notifications@github.com wrote:

Both issues fixed, please repoen this PR as I can't do it.

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