Fix for negative RecStatus enum values

RecStatus::Type does not work correctly when specified as int8_t or
int16_t. Negative values are not translated correctly. Fixed this by
changing RecStatus::Type back to plain enum with default type.

mythtv/libs/libmythbase/recordingstatus.h

@@ -12,7 +12,7 @@ class MBASE_PUBLIC RecStatus : public QObject
   Q_OBJECT
 
   public:
-    enum Type : std::int8_t {
+    enum Type  {
         Pending = -15,
         Failing = -14,
         //OtherRecording = -13, (obsolete)