for the tests change some sleep into much shorter micro sleeps

tests/lib/sync-waiting-test.cpp

@@ -162,7 +162,7 @@ namespace lib {
             ASSERT (pong);
             ASSERT (0 == tok.result());
             
-            sleep (1); // if the threads don't block correctly, they've missed their chance by now... 
+            usleep (100000); // if the threads don't block correctly, they've missed their chance by now... 
             
             // kick off the notification cascade...
             uint val = (rand() % 1000);

tests/lib/thread-wrapper-join-test.cpp

@@ -62,7 +62,7 @@ namespace lib {
         void
         theAction (int secretValue)   ///< to be run in a new thread...
           {
-            sleep(1);
+            usleep (100000);           // pause 100ms prior to modifying
             aValue_ =  secretValue+42;
           }
         

tests/lib/thread-wrapper-test.cpp

@@ -98,7 +98,7 @@ namespace lib {
             sum = checksum = 0;
             TestThread instances[NUM_THREADS]    SIDEEFFECT;
             
-            sleep (1); /////////////////TODO better method of waiting for the threads to terminate..... 
+            usleep (200000);  // pause 200ms for the threads to terminate..... 
             
             ASSERT (0 < sum);
             ASSERT (sum==checksum);