Added basic Qt5 support

libqutim and qutim executable are now buildable by Qt5
One more step for Qt5 support

Now new plugin system must be reconsidered
Added Q_PLUGIN_METADATA to all generated plugins
Added forgotten files
Changed destination property to destinationDirectory
Added QT_PLUGIN_METADATA macro to all corelayer plugins
Added jabber protocol to build
init qt5
jabber to qt5
Merge pull request #211 from trett/qt5

Qt5
Added icons support

Attention: QXdg submodule was moved to GitHub
Don't forget to call git submodule sync
ICQ and IRC are ported to Qt5
Fixed resources installation
Fixed system recognition

Added support for Windows 8 and 8.1
Fixed resource installation
Fixed dbusnotification plugin
autopaster, autoreply, antispam to qt5
[qt5] birthdayremainder, clconf
[qt5] emoedit, highlighter
[qt5] histman