Update the Windows install.

windows/resources/test-odbc.ps1

@@ -0,0 +1,17 @@
+Function Test-ODBC([string]$DSN,[string]$username,[string]$password) {
+	$connection_string = "DSN=$DSN;"
+	if ($username) {
+		$connection_string += "username=$username;"
+	}
+	if ($password) {
+		$connection_string += "password=$password;"
+	}
+	$conn = New-Object System.Data.Odbc.OdbcConnection
+	$conn.ConnectionString = $connection_string
+	$conn.open()
+	$result = ($conn.State -eq "Open")
+	if ($result) {
+		$conn.Close()
+	}
+	return $result
+}