cmake: lib64 installation for 64bit

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
QtScriptAdapter workaround to get cwd for loaded qml

declarative engine does not expose loaded qml file path so it is
impossible to guess it to use for require() etc. But it resolves qml
component urls based on it, so using QtScriptAdapter to register it
for QtScript search path

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>
cmake: install man

Signed-off-by: Denis Zalevskiy <denis.zalevskiy@jollamobile.com>