Add wxThread::SetName for naming threads for debugging purposes

Such thread names can be shown by some debuggers, and depending on
the OS and compiler versions used, they can be visible in process
lists and crash dumps.

Co-authored-by: PB <PBforDev@gmail.com>

samples/thread/thread.cpp

@@ -919,6 +919,10 @@ MyThread::~MyThread()
 
 wxThread::ExitCode MyThread::Entry()
 {
+    // setting thread name helps with debugging, as the debugger
+    // may be able to show thread names along with the list of threads.
+    SetName("My Thread");
+
     wxLogMessage("Thread started (priority = %u).", GetPriority());
 
     for ( m_count = 0; m_count < 10; m_count++ )
@@ -970,6 +974,10 @@ void MyWorkerThread::OnExit()
 
 wxThread::ExitCode MyWorkerThread::Entry()
 {
+    // setting thread name helps with debugging, as the debugger
+    // may be able to show thread names along with the list of threads.
+    SetName("Worker Thread");
+
 #if TEST_YIELD_RACE_CONDITION
     if ( TestDestroy() )
         return NULL;