Switching to Qt5
-------
releasing versino 1.6.0 for testing
Allow "+" in webupdate files
Ready for testing
Switching back to "win32" update tree
Declaring HWND in ecwin7 for Non-Windows OSes
Setting WIndow style to Plastique for Qt4
missing files added
Merge remote-tracking branch 'remotes/official-release/master'

Resolve MSVC compilation conflicts