Add some strings about License for MapGuide Enterprise

[hubu]

We need to define some strings for Mapguide Enterprise in \OS\Common\Foundation\System\Resources.h. These strings are about License in Mapguide Enterprise. And we have some existing strings in this Resources.h like this:

const STRING MgResources::RegisteredLicenseDetected = L"Registered license detected..."; const STRING MgResources::EvaluationLicenseDetected = L"Evaluation license detected. Evaluation will expire in: %1 day(s)."; const STRING MgResources::AlphaReleaseDetected = L"Alpha release detected. Alpha version will expire in: %1 day(s)."; const STRING MgResources::BetaReleaseDetected = L"Beta release detected. Beta version will expire in: %1 day(s)."; const STRING MgResources::PreviewReleaseDetected = L"Preview release detected. Preview version will expire in: %1 day(s).";

So this is just a enhancement.

[tomfukushima]

submitted: r4143