Rename some system functions, merge the Launch* ones.

android launchurl buildfix

Windows/EmuThread.cpp

@@ -219,7 +219,7 @@ void MainThreadFunc() {
 		} else {
 			if (g_Config.iGPUBackend == (int)GPUBackend::DIRECT3D9) {
 				// Allow the user to download the DX9 runtime.
-				LaunchBrowser("https://www.microsoft.com/en-us/download/details.aspx?id=34429");
+				System_LaunchUrl(LaunchUrlType::BROWSER_URL, "https://www.microsoft.com/en-us/download/details.aspx?id=34429");
 			}
 		}