* Fix various compile warnings (on MSVC2005 and Android)
* A function declaration without a prototype is deprecated in all versions of C
* Fix build warning on VS2022
* Minor update on sample app pjsua2 for Android Kotlin: add param to avoid activity recreation in activity config changes, useful in maintaining video window sizes on orientation change.
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Co-authored-by: sauwming <ming@teluu.com>
Co-authored-by: Riza Sulistyo <trengginas@users.noreply.github.com>
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