Unarr: use static lib for mac builds.

config.pri

@@ -26,15 +26,9 @@ CONFIG(no_opengl) {
 
 !CONFIG(unarr):!CONFIG(7zip) {
 	unix {
-		!macx {
-				CONFIG+=unarr
-			}
-		else {
-				CONFIG+=7zip
-			}
-	
-		}
+		CONFIG+=unarr
+		  }
 	win32 {
 			CONFIG+=7zip
 		  }
-}
+}