Rename WXTHREAD_XXX_PRIORITY yo wxPRIORITY_XXX.

This will allow to reuse the same constants for the process priorities in an
upcoming commit.

See #14931.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73405 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/thread.h

@@ -86,12 +86,12 @@ enum wxThreadWait
 #endif
 };
 
-// defines the interval of priority
+// Obsolete synonyms for wxPRIORITY_XXX for backwards compatibility-only
 enum
 {
-    WXTHREAD_MIN_PRIORITY      = 0u,
-    WXTHREAD_DEFAULT_PRIORITY  = 50u,
-    WXTHREAD_MAX_PRIORITY      = 100u
+    WXTHREAD_MIN_PRIORITY      = wxPRIORITY_MIN,
+    WXTHREAD_DEFAULT_PRIORITY  = wxPRIORITY_DEFAULT,
+    WXTHREAD_MAX_PRIORITY      = wxPRIORITY_MAX
 };
 
 // There are 2 types of mutexes: normal mutexes and recursive ones. The attempt
@@ -558,7 +558,8 @@ public:
     wxThreadError Resume();
 
     // priority
-        // Sets the priority to "prio": see WXTHREAD_XXX_PRIORITY constants
+        // Sets the priority to "prio" which must be in 0..100 range (see
+        // also wxPRIORITY_XXX constants).
         //
         // NB: the priority can only be set before the thread is created
     void SetPriority(unsigned int prio);