Add definition for GMM_INLINE_VIRTUAL macro.

This is to be used for GMM DLL in Release-Internal and Release modes.

Change-Id: Iea30c0e72748717365259a9a6b39e6ef3280cd4e

Source/GmmLib/inc/External/Common/GmmCommonExt.h

@@ -27,12 +27,7 @@ OTHER DEALINGS IN THE SOFTWARE.
 //===========================================================================
 #ifdef GMM_LIB_DLL                                      /* To be defined by Clients if GMMlib needs to be in DLL/so */
 
-#ifdef _DEBUG
-    #define GMM_INLINE_VIRTUAL              virtual     // inline functions are made virtual for Debug version of Gmmlib Dll to export them from Dll
-                                                        // For RI and Release, inline functions can be exported from DLL without being made virtual
-#else
-    #define GMM_INLINE_VIRTUAL
-#endif
+#define GMM_INLINE_VIRTUAL              virtual
 
 #define GMM_VIRTUAL                     virtual